Deirdre is factoring the polynomial x2 + 2x – 24. Which combination can she use to replace the middle term, 2x?
2 answers:
to replace 2x we need +6x-4x
Answer:
6x - 4x
Step-by-step explanation:
x^2 + 2x – 24
We need to find out the factors that replace the middle term +2x
Constant term is -24
coefficient of middle term is +2
We need to find out two factors whose product is -24 and sum is +2
6 times (-4) = -24
6 + ( -4) = 2
So 6 and -4 gives us product -24 and sum +2
the middle term +2x can be written as 6x - 4x
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