Fsc Part 1 Mathematics (Complete Solution)

Q2
Solve the Following equations by factorization

x2 + 7x + 12 = 0
x2+ 4x + 3x + 12 = 0
[∴ 4 x 3 = 12 and 4 + 3 = 7]
x(x + 4) + 3(x + 4) = 0
(x + 3)(x + 4) = 0

Either x + 3 = 0      OR      x + 4 = 0
x = -3 x = -4
∴ Soution Set = { -3, -4 }

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