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Quadratic Equation as Product of 2 First Degree Equations

Question 92 x...

Question

Question 92 (xxiii)

Factorise the following using the identity $a^{2} - b^{2} = (a + b) (a - b) .$

$x^{4} - y^{4}$

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Solution

$x^{4} - y^{4} = (x^{2})^{2} - (y^{2})^{2} = (x^{2} + y^{2}) (x^{2} - y^{2}) = (x^{2} + y^{2}) (x + y) (x - y)$

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Quadratic Equation as Product of 2 First Degree Equations

Standard X Mathematics

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