product of pragatis age 2 years ago and 3 years hence is 84 . find her present age
Answers
Answered by
9
Let her present age be x
A. To. Q
(x-2)(x+3)=84
x^2 - 2x+3x-6=84
x^2 +x-90=0
x^2 +10x-9x-90=0
x(x+10)-9(x+10)=0
x+10)(x-9)=0
x=-10(not possible) & x=9yrs is the ans
A. To. Q
(x-2)(x+3)=84
x^2 - 2x+3x-6=84
x^2 +x-90=0
x^2 +10x-9x-90=0
x(x+10)-9(x+10)=0
x+10)(x-9)=0
x=-10(not possible) & x=9yrs is the ans
Answered by
0
2 years ago OMG nice have fun may god bless u
Similar questions