AIR MATH

Math Question

What is the product?
\[
(5 r+2)(3 r-4)
\]
\( 15 r^{2}+8 \)
\( 15 r^{2}-8 \)
\( 15 r^{2}+14 r-8 \)
\( 15 r^{2}-14 r-8 \)

Solution

solution

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