#### Question

Use a suitable identity to get the following products.

(a^{2} + b^{2}) (− a^{2} + b^{2})

#### Solution

(a^{2} + b^{2}) (− a^{2} + b^{2}) = (b^{2} + a^{2}) (b^{2} − a^{2})

= (b^{2})^{2} − (a^{2})^{2} [(a + b) (a − b) = a^{2} − b^{2}]

= b^{4} − a^{4}

Is there an error in this question or solution?

Solution Use a Suitable Identity to Get the Following Products. (A2 + B2) (− A2 + B2) Concept: Standard Identities.