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ASHA 777 [7]
3 years ago
13

PLEASE HELP! When x = 1 — 2 , 3x 2 =

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
4 0

Plug in the x value.

3(1-2)2=?
1-2= -1
3(-1)= -3
-3(2)= -6.

The answer is -6. 



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Step-by-step explanation:

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Putting the values:

(a+2)(b+2)\\\\=\bigg(\dfrac{3+\sqrt{57}}{4}+2\bigg)\bigg(\dfrac{3-\sqrt{57}}{4}+2\bigg)\\\\=\bigg(\dfrac{11+\sqrt{57}}{4}\bigg)\bigg(\dfrac{11-\sqrt{57}}{4}\bigg)\\\\=\dfrac{121-57}{156} = \dfrac{64}{16} = 4

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