Question

Factorise the following: a²b² + c²d² - a²c²- b²d².

Answer 1

I'M NOT SURE WITH THE ANS

Answer 2

${a}^{2} {b}^{2} + {c}^{2} {d}^{2} - {a}^{2} {c}^{2} - {b}^{2} {d}^{2} \\ = {a}^{2} {b}^{2} - {a}^{2} {c}^{2} + {c}^{2} {d}^{2} - {b}^{2} {d}^{2} \\ = {a}^{2} ( {b}^{2} - {c}^{2} ) - {d}^{2} ( {b}^{2} - {c}^{2} ) \\ ( {a}^{2} - {d}^{2} )( {b}^{2} - {c}^{2} )$
hey mate this is your answer!!!!!!