Sign In
Ask Question
Raegan Hurley
Mathematics
30 March, 08:05
19x^2+7-[3 (x^2-7) + 9]
How do you simplify
+2
Answers (
2
)
Katz
30 March, 08:20
0
Pemdas = Parenthesis, exponents, multiply, divide, addition, subtract. So first you need to break it down and solve all in parenthesis by distributing the 3, so 3*x^2 = 3x^2 & 3*-7 = - 21. NEW equation would be 19x^2+7-[3x^2-21+9]. Now you're going to distribute that negative sign and combine like terms. 19x^2 - 3x^2 is now 16x^2. 7 - (-21) + 9 solve for that which is 7+21 = 28 then add the 9 which will now be 37. so the simplify answer is now 16x^2 + 28
Comment
Complaint
Link
Gaven Jacobson
30 March, 08:23
0
19x2+6 - (3 (x2-7) + 9) Final result : 2 • (8x2 + 9)
Step by step solution : Step 1 : Trying to factor as a Difference of Squares:
1.1 Factoring: x2-7
Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)
Proof : (A+B) • (A-B) =
A2 - AB + BA - B2 =
A2 - AB + AB - B2 =
A2 - B2
Note : AB = BA is the commutative property of multiplication.
Note : - AB + AB equals zero and is therefore eliminated from the expression.
Check : 7 is not a square!
Ruling : Binomial can not be factored as the difference of two perfect squares.
Equation at the end of step 1 : ((19• (x2)) + 6) - (3• (x2-7) + 9) Step 2 : Equation at the end of step 2 : (19x2 + 6) - (3x2 - 12) Step 3 : Step 4 : Pulling out like terms:
4.1 Pull out like factors:
16x2 + 18 = 2 • (8x2 + 9)
Polynomial Roots Calculator:
4.2 Find roots (zeroes) of : F (x) = 8x2 + 9
Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F (x) = 0
Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers
The Rational Root Theorem states that if a polynomial zeroes for a rational number P/Q then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient
In this case, the Leading Coefficient is 8 and the Trailing Constant is 9.
The factor (s) are:
of the Leading Coefficient : 1,2,4,8
of the Trailing Constant : 1,3,9
Let us test ...
P Q P/Q F (P/Q) Divisor - 1 1 - 1.00 17.00 - 1 2 - 0.50 11.00 - 1 4 - 0.25 9.50 - 1 8 - 0.13 9.13 - 3 1 - 3.00 81.00
Note - For tidiness, printing of 19 checks which found no root was suppressed
Polynomial Roots Calculator found no rational roots
Final result : 2 • (8x2 + 9)
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“19x^2+7-[3 (x^2-7) + 9] How do you simplify ...”
in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
A room is 18ft long by 18ft wide. A blueprint shows the room to be 3.5 inches long. what is the width of the room on the blueprint
Answers (2)
What are the first 2 steps in solving a radical equation
Answers (1)
S/3+.6=1.2 What is s?
Answers (1)
Su Ling started an art project with 1 yard felt. She used 5/6 yard. How much felt does Su Ling have left?
Answers (2)
7. Find the volume of a square pyramid with a base length of 9 cm and a height of 4 cm.
Answers (2)
New Questions in Mathematics
A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?
Answers (1)
I am very confused on how to figure out if y = 3/4x is proportional?
Answers (2)
Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?
Answers (2)
At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?
Answers (1)
Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.
Answers (1)
Home
»
Mathematics
» 19x^2+7-[3 (x^2-7) + 9] How do you simplify
Sign In
Ask Question
Menu
Calculator
Subjects
History
English
Mathematics
Biology
Physics
Chemistry
Geography
Social Studies
Business
Law
Arts
SAT
Advanced Placement (AP)
Computers & Technology
Engineering
Sign In
close
Sign In
Sign Up
Forgot Password?