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(i) ` x^(2) + 6x + 5 = 0` (ii) ` y^(2) -10y+21 = 0`A. x = y or no relation can be established between x and y.B. ` x le y`C. ` x ge y`D. ` x lt y` |
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Answer» Correct Answer - D (i) ` x^(2) + 6x + 5 = 0` ` x^(2) + x + 5x + 5 = 0` ` x(x+1) +5(x+1) = 0` ` (x+5) (x + 1) = 0` ` x = -5, -1` (ii) ` y^(2) - 10y + 21 = 0` ` y^(2) - 7y - 3y + 21 = 0` ` y(y -7) - 3 ( y -7) = 0` ` ( y - 3) ( y - 7) = 0` ` y = 3, 7` ` :. y gt x ` |
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