The product of Rama's age 5 years ago and his age 8 years ago hence is 30. Find his present age
Answers
Answered by
3
( x - 5 ) × ( x + 9 ) = 15
x^2 - 5x + 9x - 45 = 15
x^2 + 4x = 60
x^2 + 4x - 60 = 0
x^2 + 10x - 6x - 60 = 0
x ( x + 10 ) - 6 ( x + 10 ) = 0
( x -6 ) ( x + 10 ) = 0
x = 6
x = -10
Answered by
1
( x - 5 ) × ( x + 9 ) = 15
x^2 - 5x + 9x - 45 = 15
x^2 + 4x = 60
x^2 + 4x - 60 = 0
x^2 + 10x - 6x - 60 = 0
x ( x + 10 ) - 6 ( x + 10 ) = 0
( x -6 ) ( x + 10 ) = 0
x = 6
x = -10
Similar questions