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What is the standard form of the quadratic equation 2x + (x-4)(x + 1) = 9? a. x²-x-13=0 b. x² + x + 13 = 0 C. x − 5x + 5 =0 d. x²5x-13 = 0 what is the answer?

What is the standard form of the quadratic equation 2x + (x-4)(x + 1) = 9? a. x²-x-13=0 b. x² + x + 13 = 0 C. x − 5x + 5 =0 d. x²5x-13 = 0 what is the answer?
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What is the standard form of the quadratic equation 2x + (x-4)(x + 1) = 9?

a. x²-x-13=0
b. x² + x + 13 = 0
C. x − 5x + 5 =0
d. x²5x-13 = 0
what is the answer?

asked
User NomeN
by
8.0k points

1 Answer

5 votes

Answer:

a.

Explanation:

2x+(x-4)(x+1)=9

2x+x²+x-4x-4=9

x²-x-9-4=0

x²-x-13=0

answered
User Ppcano
by
7.9k points
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