Question

Solve: x2 – x = 2
a) x = -1, x = -2
b) x = -2, x = 1
c) x = 1, x = 2
d) x = 2, x = -1

Answer 1

d) x=2, x=-1

Answer 2

put x= 2 u get
2^2 - 2 = 4-2 = 2

put x = -1, u get
(-1)^2 - (-1) = 1 + 1 = 2

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