Question

the length of a rectangle is 7cm greater then its width.Find the length of the rectangle if its area is 120cm squared

Answer 1

help

Answer 2

area=length*width

Answer 3

let width=x

Answer 4

length is 7 cm greater than width

Answer 5

length=x+7

Answer 6

120=x*(x+7)

Answer 7

x^2+7x=120
subtract 120 fromboth side

Answer 8

x^2+7x-120=0

Answer 9

x^2+15x-8x-120=0
now solve it further