if zeba were younger by 5 year than what she really is, then the square of her age (in year) would have been 11 more than 5 time her actual age. what is her age now
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Her age is 14.
Explanation :
(x-5)^2=5x+11
X^2 - 10x + 25=5x+11
X^2-15x+14=0
X^2-x-14x+14=0
X(x-1)-14(x-1)=0
(x-1)(x-14)=0
X=1 and x=14
X can not be 1 in this case as x - 5 is not valid
So x =14
Any doubt, happy to help.
Explanation :
(x-5)^2=5x+11
X^2 - 10x + 25=5x+11
X^2-15x+14=0
X^2-x-14x+14=0
X(x-1)-14(x-1)=0
(x-1)(x-14)=0
X=1 and x=14
X can not be 1 in this case as x - 5 is not valid
So x =14
Any doubt, happy to help.
genious2000:
consider her age as x
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