Question

A flowerbed is to be 3m longer than its width. the fowerbed will have an area of 70m² is this quadrartic or not?

Answer 1

Answer:

we know that A=L*W. Here, we are told that L=W+3.

Substituting, we get A=(W+3)*W=W2+3W=70 m2

From here, there are many ways to solve for W. Let's factor:

W2+3W-70=0

(W+10)(W-7)=0

W=7, -10

We can disregard the negative root, since length must be positive. Now, you can substitute W=7 into either of the first two equations to solve for L.