Question

product of pragati's age 2 years ago and 3 years hence is 84. find her present age ? by using formula method​

Answer 1

Step-by-step explanation:

Let the present age of Pragati be x years.

By condition,

(x-2)(x+3)=84

x^2+x-6=84

x^2+x-90=

x^2+10x-9x-90=0

x(x+10)-9(x+10)=0

(x+10)(x-9)=0

Age can not be negative.So,x=9

So,The present age of Pratati is 9 years.