Question

What is the value of (2 - 2z + z2)(2 + 2z - z2), when z+2z = 2 ?

A) 0 B) 2 C) 4 D) 8

Answer 1

Answer:

4

Step by step explanation:

(2-2×(2)+(2)×2)(2+2×(2)-(2)×2)

(2-4+4)(2+4-4)

(-2+4)(6-4)

(2)(2)

4

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