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yawa3891 [41]
3 years ago
11

Which of the following is the correct factorization of the trinomial below?

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
5 0
D: Is the correct Answer
sweet-ann [11.9K]3 years ago
4 0

Answer:

-1(7x+12)(x+1)

Step-by-step explanation:

1) Find out which two integer numbers whose product result in -84 and whose sum is -5?

-7x² +5x +12= 0

Product ( )*( )= -84

And Sum ( )+( )= 5

12 * -7 = -84 and 12 +(-7) = 5

2) We now can rewrite the above trinomial as

-7x²+12x-7x-12=0

3) Group them, highlight the MCD and rewrite it as a product.

x(7x+12) -1(7x-12)=0  Maximum Common Divider in evidence

x(7x+12) -1(7x-12)=0 Common Factor in bold multiplied by -1

-1(7x-12)(x+1) The Second term was divided by -1

-1(7x+12)(x+1)=0

4) Test it, to check your work

-1(7x+12)(x+1)

-1[7x²-5x-12]

-7x²+5x+12

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