x2 ndash 17x 72 0 y2 ndash 17y 70 0 ........

Quantitative Aptitude(IBPS RRB CL) Quadratic Equations

Direction () : Two equations I and II are given below in each question.You have to solve these equations and give answer

x² – 17x + 72 = 0

y² – 17y + 70 = 0

if x < y

if x > y

if x ≤ y

if x ≥ y

if x = y or no relation can be established

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Explanation:

x² – 17x + 72 = 0
=> x²– 9x - 8x + 72 = 0
=> x(x - 9) - 8(x - 9)
=> (x - 8) (x - 9)
=> x = 8 , 9
y² – 17y + 70 = 0
=> y² – 10y - 7y + 70 = 0
=> y(y - 10) - 7(y - 10)
=> (y - 7) (y - 10)
=> y = 7 , 10
hence, no relationship can be established between x and y.