x2-x-12 = 0 সমীকরণের মূলম্বয় নিচের কোনটি?
Created: 3 months ago |
Updated: 3 months ago
best des
x^2−x−12 = 0
= x^2- 4x + 3x−12 = 0
বা, x(x−4) + 3(x−4) = 0
বা, (x + 3)(x−4) = 0
x + 3 = 0
x = −3 or
x - 4 = 0
x = 4
অতএব, x= -3,4
x2 - x - 12 = 0
বা, x2 -4x +3x -12 =0
বা, x(x-4) +3(x-4) =0
বা, (x-4) (x+3) =0
সুতরাং, x-4=0 , x+3=0
বা,x=4 , x=-3
উত্তর: x=4, -3
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