Multiply.
-$\left(\mathrm{s}-\frac{4}{9}\right)^{2}$
A) $s^{2}-8 s+16$
B) $s^{2}-\frac{8}{9} s+\frac{16}{81}$
C) $s^{2}-\frac{8}{81} s+\frac{16}{81}$
D) $s^{2}-\frac{16}{9} s+\frac{16}{81}$

Question

Quizplus · Accepted Answer

To square the binomial $\left(\mathrm{s}-\frac{4}{9}\right)^{2}$, we use the formula $(a-b)^2 = a^2 - 2ab + b^2$, where $a = s$ and $b = \frac{4}{9}$. Thus, $s^2 - 2\left(s \cdot \frac{4}{9}\right) + \left(\frac{4}{9}\right)^2 = s^2 - \frac{8}{9}s + \frac{16}{81}$.