Fsc Part 1 Mathematics (Complete Solution)

Q4
Solve the Following equations by factorization

x2 - x = 2
x2 - x - 2 = 0
x2- 2x + x - 2 = 0
[∴ -2 x 1 = -2 and -2 + 1 = -1]
x(x - 2) + 1(x - 2) = 0
(x + 1)(x - 2) = 0

Either x + 1 = 0      OR      x - 2 = 0
x = -1 x = 2
∴ Soution Set = { -1, 2 }

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