Question

Q13.Using identity, Find the (a2 + b2) (a2 − b2)​

Answer 1

Answer:

(a

2

+b

2

)(−a

2

+b

2

)=(b

2

+a

2

)(b

2

−a

2

)

=(b

2

)

2

−(a

2

)

2

[Using: (a+b)(a−b)=a

2

−b

2

]

=b

4

−a

4

Answer 2

hope it will help you ok