Respuesta :

Part 9

we have

(c+2)(c-2)^2

If c=8

substitute the value of c in the expression

so

(8+2)(8-2)^2

(10)(6)^2

(10(36)

360

Part 10

we have

7(3x-2)^2

If x=4

substitute the value of x in the expression

7(3(4)-2)^2

7(10)^2

7(100)

700

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