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Asked Oct 7, 2019
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17. -3
х2+x-12
4х+16
2х-4
18.
4х2
х+1
8х-16
6х
8х-16
19.
Зx+3
5х-10
5х
20.
х+4
20
2
21.
х-4
1
2х+2
х+4
5х-20
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17. -3 х2+x-12 4х+16 2х-4 18. 4х2 х+1 8х-16 6х 8х-16 19. Зx+3 5х-10 5х 20. х+4 20 2 21. х-4 1 2х+2 х+4 5х-20

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Expert Answer

Step 1

We’ll answer the first question since the exact one wasn’t specified. Please submit a new question specifying the one you’d like answered.

We have to factor the expressions. 

For x^2+x-12. We factor -12 so that sum of the factors = 1

-12= (4)(-3)

And 4+(-3)=1

So we write x as 4x-3x

For 4x+16 used GCF method. GCF of 4 and 16 is 4. So factored out 4.

х-3
4х+16
х?+x-12
х+1
х-3
4(х+4)
х?+4х-3х-12
х+1
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х-3 4х+16 х?+x-12 х+1 х-3 4(х+4) х?+4х-3х-12 х+1

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Step 2

Then factor by grouping for x^2...

х-3
4(х+4)
х?+4x-3х-12
X+1
х-3
4(х+4)
x(x+4)-3(x+4)
4(х+4)
х+1
х-3
(х+4)(х-3)
x+1
help_outline

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х-3 4(х+4) х?+4x-3х-12 X+1 х-3 4(х+4) x(x+4)-3(x+4) 4(х+4) х+1 х-3 (х+4)(х-3) x+1

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