Problema Solution
Maria had a square piece of paper. She cut 3 inches off the length and 4 inches off the width. Now the paper has a surface area of 30 in2. Which equation would you use to find the dimensions of the original piece of paper?
Answer provided by our tutors
Let side of aquare be x inch.
After cutting, it would be (x-3)and (x-4)
So new area=(x-3)(x-4)=30
Equation is x^2-7x-18=0