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What are the two roots of the equation x²-7x+12?

A 1 & 7

B 3 & 4

C -3 & 4

D 2 & 3

Solution

Correct Answer: Option B

এখানে ,
x ² -7x+12 সমীকরণ আকারে সাজিয়ে পাই ,
x-7x+12=0
বা, x²-3x-4x+12 =0
বা, x(x-3)-4(x-3)=0
বা, (x-3)(x-4)=0
∴ x =3,4

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