Multiply.
-$(7 m-4 w)(7 m+4 w)$
A) $49 m^{2}-56 m w-16 w^{2}$
B) $7 m^{2}-4 w^{2}$
C) $49 m^{2}+56 m w-16 w^{2}$
D) $49 m^{2}-16 w^{2}$

Name: Multiply. -$(7 m-4 w)(7 m+4 w)$ A) $49 m^{2}-56 m w-16 w^{2}$ B) $7 m^{2}-4 w^{2}$ C) $49 m^{2}+56 m w-16 w^{2}$ D) $49 m^{2}-16 w^{2}$
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Question

Quizplus · Accepted Answer

This is a product of a sum and a difference, which follows the formula $a^2 - b^2$. Applying this to the given expression: $(7m)^2 - (4w)^2 = 49m^2 - 16w^2$.

Multiply - (7m−4w)(7m+4w)(7 m-4 w)(7 m+4 w)(7m−4w)(7m+4w) A) 49m2−56mw−16w249 m^{2}-56 m w-16 w^{2}49m2−56mw−16w2

Multiply
- $(7 m-4 w)(7 m+4 w)$ A) $49 m^{2}-56 m w-16 w^{2}$