Question

25. The width of a rectangle is (x+1) and the length is (X-6). What is the length and width of the rectangle if the area is

30 square feet?

Answer 1

length = 3 width = 10

Explanation:

Answer 2

x=−4 or x=9

Explanation:

1- As we know the formula for Area of rectangle = length x width

2- Multiply given width = (x+1) with length = (x-6)

3-Equation will be (x+1)(x-6) = 30

4- Solving x^2−5 x−6 = 30

5- x^2−5 x -36 = 0

6-Factor left side of equation.

(x+4)(x−9)=0

Set factors equal to 0.

x+4=0 or x−9=0