pls help please help.fast
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Let present age of son = x
Age one year ago = x - 1
Age of father one year ago = 8(x - 1)
Present age of son = x
Age of father = x^2
The difference in their ages won't change, even after years:
8(x - 1) - (x - 1) = x^2 - x
=> 8x - 8 - x + 1 = x^2 - x
=> x^2 - 8x + 7 = 0
=> x^2 - 7x - x + 7 = 0
=> x(x - 7) - 1(x - 7) = 0
=> (x - 1)(x - 7) = 0
=> x = 1, 7
Since the son can't be 0 years old, a year before, age of son is 7 years.
Age of father = x^2 = 49 years
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