Question

Divide 57 into two parts whose product is 680

Answer 1

x(57-x)=680
57x-x²=680
x²-57x+680=0
x²-40x-17x+680=0
x(x-40)-17(x-40)=0
(x-17)(x-40)=0
x=17,40

Answer 2

hey dear
first part = x
second= 57-x
x(57-x)=680
57x-x^2=680
x^2-57x+680=0
by solving this we get
x = 17 or 40

so numbers are 17 and 40