Question 13

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waecmaths question: 

Expand $(2x-3y)(x-5y)$

Option A: 

$2{{x}^{2}}-13xy-15{{y}^{2}}$

Option B: 

$2{{x}^{2}}-13xy-15{{y}^{2}}$

Option C: 

$2{{x}^{2}}+13xy+15{{y}^{2}}$

Option D: 

$2{{x}^{2}}-13xy+15{{y}^{2}}$

waecmaths solution: 

$\begin{align}  & (2x-3y)(x-5y)=2{{x}^{2}}-10xy-3xy+15{{y}^{2}} \\ & (2x-3y)(x-5y)=2{{x}^{2}}-13xy+15{{y}^{2}} \\\end{align}$

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