Question

Factorise:
$xy(z {}^{2} + 1) + z(x {}^{2} + y {)}^{2}$
​

Answer 1

Answer:

Xyz^2 + xy + zx^2 + zy^2

= xyz^2 + zx^2 + xy + zy^2

= xz(yz + x) +y(zy + x)

= (yz + x)(xz + y)

Step-by-step explanation:

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