Bb=135
b+6=B
(b+6)b=135
b^2+6b-135=0
now factors of 135, one must end with a 5 (try 15, 9)
A boy is 6years younger than his brother and the product of their ages is 135 find their ages
3 answers
His bro. is X years old.
The boy is x-6 years old.
x(x-6) = 135.
x^2--6x-135 = 0,
(x-15)(x+9 = 0,
x-15 = 0, X = 15.
x+9 = 0, X = -9.
X = 15.
x-6 = 9.
The boy is x-6 years old.
x(x-6) = 135.
x^2--6x-135 = 0,
(x-15)(x+9 = 0,
x-15 = 0, X = 15.
x+9 = 0, X = -9.
X = 15.
x-6 = 9.
make it more explainable