Question

Q7)Simplify the following expressions and then find the numerical values for x = -2.
(1) 3(2x - 4) + x2 + 5
(ii) -2(-3x + 5) - 2(x+4)​

Answer 1

Step-by-step explanation:

i) 3(2(-2)-4))+(-2)²+5

3(-4-4)+4+5

3(-8)+9

-24+9

-15

ii) -2(-3(-2)+5))-2(-2+4)

-2(6+5)-2(-2)

-2(11)+4

-22+4

-18

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