Question 7

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Jambmaths question: 

Simplify $\frac{\sqrt{98}-\sqrt{50}}{\sqrt{32}}$

Option A: 

3

Option B: 

1

Option C: 

$\frac{1}{2}$

Option D: 

$\frac{1}{4}$

Jamb Maths Solution: 

$\begin{align}  & \frac{\sqrt{98}-\sqrt{50}}{\sqrt{32}}=\frac{\sqrt{49\times 2}-\sqrt{25\times 2}}{\sqrt{16\times 2}} \\ & =\frac{7\sqrt{2}-5\sqrt{2}}{4\sqrt{2}} \\ & =\frac{2\sqrt{2}}{4\sqrt{2}}=\frac{1}{2} \end{align}$

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