## Intermediate Algebra (12th Edition)

$0.04x^2-0.56y+1.96y^2$
Using $(a+b)^2=a^2+2ab+b^2$ or the square of a binomial, the given expression, $(0.2x-1.4y)^2 ,$ is equivalent to \begin{array}{l}\require{cancel} (0.2x)^2+2(0.2x)(-1.4y)+(-1.4y)^2 \\\\= 0.04x^2-0.56y+1.96y^2 .\end{array}