2. What are the factors of -3x + x²-10?
A. (x + 2)(x - 5)
B. (2x + 5) (x + 2)
C. (x-2)(x - 5)
D. (2x - 5) (x - 2)
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2. What are the factors of -3x + x²-10?
A. (x + 2)(x - 5)
B. (2x + 5) (x + 2)
C. (x-2)(x - 5)
D. (2x - 5) (x - 2)
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Answer:
A.(x+2)(x-5)
Step-by-step explanation:
-3x+x²-10
use the commutative to reorder the terms
=x²-3x - 10
write -3x as a difference
x²+2x-5x-10
factor out x from the expresion
x x (x+2) - 5x - 10
factor out 5 from the expression
xx (x+2)-5(x+2)
factor out x+2 from the expression
= (x+2)x(x-5)