Question

product of Pragati age 2 years ago and 3 years hence is 84 find the present age.
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Answer 1

Step-by-step explanation:

Let Pragati's present age be x years.

Her age 2 years ago = x−2

Her age 3 years hence = x+3

Product of Pragati's age 2 years ago and 3 years hence is 84.

(x−2)(x+3)=84

⇒x

2

+x−6=84

⇒x

2

+x−90=0

x=

2a

−b±

b

2

−4ac

=

2

−1±

361

=

2

−1−19

or

2

−1+19

⇒x=−10 or 9

But age cannot be negative so, x = 9.

Thus, Pragati's present age is 9 years

Answer 2

here is your answer :-

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