We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.

+0

# A rectangle with positive area has length represented by the expression

-6
512
2

A rectangle with positive area has length represented by the expression 3x+ 2x - 4 and width by x2 +1. Write expressions in terms of x for the perimeter and area of the rectangle. Give your answers in standard polynomial form and show your work.

Jun 3, 2018
edited by GAMEMASTERX40  Jun 3, 2018

### 2+0 Answers

#1
+1

Area: length*width

Perimeter= 2l+2w

So, for the area, we have: $$3x^2+2x-4*x^2+1=-x^2+2x+1$$

And, for the perimeter, we have: $$2\left(3x^2+2x-4\right)\cdot \:2\left(x^2+1\right)=4\left(3x^2+2x-4\right)\left(x^2+1\right)$$  .
Jun 3, 2018
#2
+2

A rectangle with positive area has length represented by the expression 3x2 + 2x - 4 and width by x2 +1. Write expressions in terms of x for the perimeter and area of the rectangle. Give your answers in standard polynomial form and show your work.  Jun 3, 2018