Question

factorise
a^4 - b^4 using identity (chp polynomials class 9)

Answer 1

Here's your Answer:-

${a}^{4} - {b}^{4} \\ \\ = ({a}^{2} ) ^{2} - ({b}^{2} ) ^{2} \\ \\ = ( {a}^{2} + {b}^{2} )( {a}^{2} - {b}^{2} )$

Hope it helps ♥✨