Question
I. 63x² + 146x + 80 = 0 II. 42y² + 109y
+ 70 = 0Solution
I. 63x² + 146x + 80 = 0 63x² + 90x + 56x + 80 = 0 9x(7x + 10) + 8(7x + 10) = 0 (9x + 8) (7x + 10) = 0 ∴ x = (-8)/9, (-10)/7 II. 42y² + 109y + 70 = 0 42y² + 60y + 49y + 70 = 0 6y(7y + 10) + 7(7y + 10) = 0 (6y + 7) (7y + 10) = 0 ∴ y = (-7)/6, (-10)/7 Hence, relationship cannot be established between x and y
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