Factor as a product of two binomials x^2-64

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

Write the equations in logarithmic form 7^3=343