Question

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

Answer 1

a
$let \: a = x \: and \: b = y \\ \\ ({x}^{2} + 1) {y}^{2} - {y}^{4} - {x}^{2} \\ = {x}^{2} \times {y}^{2} - {x}^{2} - {y}^{4} + {y}^{2} \\ = {x}^{2}( {y}^{2} - 1) - {y}^{2}( {y}^{2} - 1) \\ = ({y}^{2} - 1)( {x}^{2} - {y}^{2}) \\ = (y + 1)(y - 1)(x + y)(x - y)$

Answer 2

Step-by-step explanation:

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