Question

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: (4z - 3a +2z²)²​

Answer 1

Answer:

16z²-9a²+4z⁴-24az-12az²+16z³

Step-by-step explanation:

by comparing the expression with (a+b+c)² we get :

a = 4z ; b= -3a ; c=2z²

We know ,(a+b+c)²= a²+b²+c²+2ab+2bc+2ca

so, (4z - 3a +2z²)²

= (4z)²+(-3a)²+(2z²)² + 2.4z.(-3a) +2.(-3a).2z²+2×2z².4z

= 16z²-9a²+4z⁴-24az-12az²+16z³