Question 540813
"A year ago, a mother was eight as old as her daughter" ___ m - 1 = 8(d - 1) ___ m = 8d - 7


"her age is the square of her daughter's age" ___ m = d^2


substituting ___ (8d - 7) = d^2 ___ 0 = d^2 - 8d + 7


factoring ___ 0 = (d - 7)(d - 1)