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Question

Solve the following quadratic equation by factorization :
x2 - x - a(a + 1) = 0

The roots area,a+1

A
True
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B
False
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Solution

The correct option is A True
x2xa(a+1)=0
x2axx+axa(a+1)=0
x2x(a+1)+axa(a+1)=0
x[x(a+1)]+a[x(a+1)]=0
[x(a+1)][x+a]=0
x(a+1)=0 and x+a=0
x=(a+1) and x=a
We can see, roots given in question are correct.

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