Question

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Answer 1

If the identity is hard then apply distribution law.

(i) 4z² + 20z + 25/2

(ii) 9z¹⁴ + 6 + 1/z¹⁴

(iii) x⁴/4 - x²y³ × 7/3 + y² × 49/9

(iv) 81y⁴ - 9y²z² + z⁴/4