Question

The length of a rectangle is 4 more than the width. The area is 357 square centimeters.

Find the length and width of the rectangle

Answer 1

17*21 = 357

Explanation:

Firstly, set up your equation.

x*(x+4)=357

Multiply X by (x+4)

x^2+4x=357

You then subtract 357 from both sides

x^2+4x-357=0

Simplify using the quadratic formula shown, if you need assistance on solving this equation put it into a online calculator, or photomath as it shows the steps taken to solve it.

`(-4+√(4^2-4\cdot \:1\cdot \left(-357\right)))/(2\cdot \:1)\\`