Kiya (x+1) (x+3)= (x-1) (x-4) ek diyo ghat samikaran hai
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(x+1) (x+3) = (x-1) (x-4)
x2+3x+x+3 = x2-4x-x-4
x2+4x+3 = x2-5x-4
9x+7 = 0
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