Question

(1 -a²) ( 1 -a²) + 4ab
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Answer 1

Answer:

$= (1 - {a}^{2} )(1 - {a}^{2} ) + 4ab \\ = (1 \times 1)( {a}^{2 + 2} ) \\ = 1 \times {a}^{4} \\ = {a}^{4}$

Answer 2

Answer:

(1 -a²) ( 1 -a²) + 4ab = a^4 -2a² + 4ab + 1

Step-by-step explanation:

(1-a^2)(1-a^2) + 4ab

(1-a^2)^2 + 4ab

(1^2 - a^2)^2 + 4ab

(1 + a^4 - 2a^2) + 4ab

a^4 -2a² + 4ab + 1

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