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September 17, 2014

September 17, 2014

Posted by **Jessica** on Wednesday, October 24, 2007 at 11:17pm.

This is what I have..is it rihgt?

5x^2+5x+2-84

5x^2+5x-82=0

-5+-the square root of 5^2-4(5)(-82)/2(5)

-5+- the square root of 25+1640/10

-5+- the square root of 1665/10

L=2+5x

L=2+5(3.58)

L=20.06 cm

W=3.58 Cm

- Geometry Help -
**Reiny**, Wednesday, October 24, 2007 at 11:26pmI don't know how you got your equation.

let the width be x

then the length is 5x+2 and

x(5x+2)=84

5x^2 + 2x - 84 = 0

now solve that.

(Igot x=3.9 and a negative x value)

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