Hii friends..!!! plzz help to solve these questions by the method of quadratic equation... plzz solve step by step
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if you ask for many questions you may increase the points upto 50 so that we can get 25
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Let the present age be x
2 year ago, her age would be = x - 2
3 year ago, her age would be = x - 3
According to the question,
( x - 2) (x - 3) = 84
x² - ( 2 + 3) x + 6 = 84
x² - 5 x + 6 = 84
x² - 5 x - 78 = 0
On solving quadratic equation by quadratic formula you can easily get the desired answer.
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