Question
I: x2Â + 31x + 228 = 0 II:
y2 + 3y – 108 = 0 Direction: In each of the following question, two equations are given. You have to solve both the equations to find the relation between x and y.Solution
x2 + 31x + 228 = 0 x2 + 19x + 12x + 228 = 0 x(x + 19) + 12(x + 19) = 0 (x + 12)(x + 19) = 0 x = -12, -19 y2 + 3y – 108 = 0 y2 + 12y – 9y – 108 = 0 y(y + 12) – 9(y + 12) = 0 (y – 9)(y + 12) = 0 y = 9, -12 x ≤ y
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