Math Is Fun Forum

MathChallenged

Guest

Word Problem for binomials

A rectangular painting with a width of x centimeters has an area of x^2+50x square centimeters.

Find a binomial that represents the length.

I don't even know how to start on this one.  I know area=LW and the width would be X.  So would the length be 50x^2?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Word Problem for binomials

Hi MathChallenged;

Since you know that A = L * W and you know that A = x^2+50x and W = x you can just plug in.

x^2 + 50x = x * L Divide both sides by x.

x + 50 = L = Length

So your length is x + 50 cms.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

MathChallenged

Guest

Re: Word Problem for binomials

Thank you for your help.  It makes sense after some explaining.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Word Problem for binomials

Hi MathChallenged;

Glad to help.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.