Question

factorize x^4-2x^2-y^2+y^2​

Answer 1

$\tt \: Questions :$

$\sf \: {x}^{4} - 2 {x}^{2} - {y}^{2} + {y}^{2}$

$\tt \: solution :$

Simplify

$\sf {x}^{4} - {2x}^{2} - {y}^{2} + {y}^{2}$

• Combine like terms

$\sf \: = {x}^{4} - {2x}^{2} \color{green} - {y}^{2} + {y}^{2}$

$\sf \color{green} = {x}^{4} - {2x}^{2}$

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Formula used

• (-) ×(+) = (-)