Daily PWN 182 – PWN Test Prep

$\begin{align*}(ax+b)(5x+9)=(ax)^2-b^2\end{align*}$

The equation above is true for all values of $x$ , and $a$ and $b$ are nonzero constants. What is the value of $a-b$ ?
A)–14
B)–4
C)4
D)14

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Comments (1)

subtracted did not add darn darn!

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