#### Question

Find the following squares by suing the identities

(0.4*p* − 0.5*q*)^{2}

#### Solution

(0.4*p* − 0.5*q*)^{2} = (0.4*p*)^{2} − 2 (0.4*p*) (0.5*q*) + (0.5*q*)^{2}

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

= 0.16*p*^{2 }− 0.4*pq*^{ }+ 0.25*q*^{2}

Is there an error in this question or solution?

Solution Find the Following Squares by Suing the Identities (0.4p − 0.5q)2 Concept: Standard Identities.