Question

factorise a4-b4................​

Answer 1

Step-by-step explanation:

factorise a4-b4

ab=2 please follow me and mark brainlest please

and ab=8also please follow me

Answer 2

Step-by-step explanation:

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