The length is ten more than the width, and the total area is 144 square feet. Write the equation and find out the dimensions, in feet, of her backyard.

Lets say the with is equal to W and the length is W+10=L

W (W+10) = 144 then

W^2 + 10W=144

W^2 + 10W - 144 = 0

(W-8) * (W+18) = 0

W=-8 but if you multiply - 8*18=-144 so just turn - 8 into a positive 8*18=144 and now it is W=8 and L=18 if you wonder what L means it means Length.