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
1) A fast food restaurant had 13 pounds of flour. If they split the flour evenly among 3 batches of chicken, how much flour would each batch use? Between what two whole numbers does your answer lie?
Answers (2)
Enter the solution to the equation in the box. 2 (x-3) = 8 (x-6) x =
Answers (2)
Which digit is not a factor 2,3,7,5,6,11
Answers (1)
The graph shows the distance Julian drives on a trip. What is Julian's speed A. 50 km per hour B. 70 km per hour C. 80 km per hour D. 40 km per hour
Answers (2)
What is the equation, in slope-intercept form, of the perpendicular bisector of the given line segment?
Answers (1)
New Questions in Mathematics
Travel Ez sells dollars at a rate of ($1.40) / (1 euro) and buys dollars at a rate of ($1.80) / (1 euro). At the beginning of a trip, Sophie exchanged $540 to get 300 euros.
Answers (1)
What is the range of y = square root x+7+5?
Answers (2)
Is to a solution of the equation 3x+6=6x?
Answers (2)
What would - 9 1/2 be as a decimal?
Answers (2)
Write the inequality that represents "-5o is warmer that - 8o." (o=temperature)
Answers (1)
Home
»
Mathematics
» 19x^2+7-[3 (x^2-7) + 9] How do you simplify
Sign In
Sign Up
Forgot Password?