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Royce Howard
Mathematics
21 November, 23:45
What is the descriminate of 9x^2+2=10x
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Armando
21 November, 23:57
0
Let's solve your equation step-by-step.
9x2+2=10x
Step 1: Subtract 10x from both sides.
9x2+2-10x=10x-10x
9x2-10x+2=0
Step 2: Use quadratic formula with a=9, b=-10, c=2.
x = - b±√b2-4ac/2a
x = - (-10) ±√ (-10) 2-4 (9) (2) / 2 (9)
x = 10±√28/18
Answer: x=5/9+1/9√7 or x = 5/9+-1/9√7
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Emilee
22 November, 00:15
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28
Step-by-step explanation:
given a quadratic in standard form : ax² + bx + c : a ≠ 0, then
Δ = b² - 4ac ← discriminant
given 9x² + 2 = 10x (subtract 10x from both sides)
9x² - 10x + 2 = 0 ← in standard form
with a = 9, b = - 10, c = 2
b² - 4ac = ( - 10) ² - (4 * 9 * 2) = 100 - 72 = 28
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