Question 40

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waecmaths question: 

Find the quadratic equation whose roots are c and –c

Option A: 

${{x}^{2}}+{{c}^{2}}$

Option B: 

${{x}^{2}}-{{c}^{2}}=0$

Option C: 

${{x}^{2}}+2cx-{{c}^{2}}=0$

Option D: 

${{x}^{2}}-2cx+{{c}^{2}}=0$

waecmaths solution: 

$\begin{align}  & (x-c)(x+c)=0 \\ & {{x}^{2}}-{{c}^{2}}=0 \\\end{align}$

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