No. The area of a square/rectangle is length * height, and 4 * 20 is 80m^2. Because Yoshi has a can of paint that can cover 81m^2, and 81m^2 > 80m^2, Yoshi does NOT need to buy more paint.
(x+13)*(x-7)=0 Split into possible cases : ________________________ x+13=0 x-7=0 Solve the equations: ________________________ x= -13 x= 7 Final solution :
