## Calculus with Applications (10th Edition)

$(2a-4b)^{2}=4a^{2}-16ab+16b^{2}$
$(2a-4b)^{2}$ Rewrite this expression as $(2a-4b)(2a-4b)$ and evaluate the product: $(2a-4b)^{2}=(2a-4b)(2a-4b)=...$ $...=4a^{2}-8ab-8ab+16b^{2}=4a^{2}-16ab+16b^{2}$