Question

Find the product of (x + 7y) and (3x-y)
(a) 732 + 48xy - 7y (b) -7x2 + 48xy + 7y
(c) 732 - 48xy - 7y (d) 7x2 - 48xy - 7y​

Answer 1

• We are asked to Find The Product of $\sf{(x + 7y)}$ and $\sf{(3x-y)}$

$\longrightarrow \sf{\left(x+7y\right)\left(3x-y\right)}$

$\longrightarrow\sf{x\cdot \:3x+x\left(-y\right)+7y\cdot \:3x+7y\left(-y\right)}$

$\longrightarrow\sf{3x^2+20xy-7y^2}$

Answer 2

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