Problem

Multiply.
$(y - 8 z) (y + 3 z)$
Simplify your answer.

Answer

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Answer

$y^{2} - 5 y z - 24 z^{2}$

Steps

Step 1 ： $(y - 8 z) (y + 3 z) = y (y + 3 z) - 8 z (y + 3 z)$

Step 2 ： $= y^{2} + 3 y z - 8 z y - 24 z^{2}$

Step 3 ： $= y^{2} - 5 y z - 24 z^{2}$

Step 4 ： $y^{2} - 5 y z - 24 z^{2}$

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