Q. 2 H5.0( 1 Vote )
Solve the following equations by factorization method:
x2 + 8x + 7
Answer :
On factorizing the above equation,
x2 + 8x + 7 = 0
x2 + 7x + x + 7 = 0
x(x + 7) + 1(x + 7) = 0
(x + 7) (x + 1) = 0
Solving the first part,
x + 7= 0
x = -7
Solving the second part,
x + 1 = 0
x = -1
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