13. What is the standard form of the quadratic equation (x + 3)(x – 2) = 9?
A. x2+x=9 B. x2+x-9=0 C. x2+x-15=0 D. x2-5x-15=0
PLEASE PUT A SOLUTION PLEASE TY
A. x2+x=9 B. x2+x-9=0 C. x2+x-15=0 D. x2-5x-15=0
PLEASE PUT A SOLUTION PLEASE TY
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Answer:
C.
Step-by-step explanation:
(x+3)(x-2) = 9
= x²-2x+3x-6-9 =0
= x²+x-15=0