# The product of raju's age 5years ago and his age 10years later is 16 determine Raju's present age

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before 5 years,raje age = x-5

later 10 year,Raju age will be= X+10

According to situation

(X-5)(X+10)=16

x^2+10x-5x-50=16

x^2 +5x-66=0

x^2+11x-6x-66=0

x(x+11)-6(x+11)=0

(x+11)(x-6)=0

x=-11,6

We neglect x=-11 ,because age never be negative

Hence Raju age at present will be 6 year