s +s+s+s
there is no formula - the answer is 64
Use squares and try it out for yourself. Get a number of squares and make a rectangle 3 squares long by 4 squares wide. Count the squares. You should have 12 squares (or 3*4). That's the best way I know to prove the formula.
The formula is: A2 - B2 = (A + B) (A - B)
(black/red=squares) X 83
No not normally
lenth times wighth
There is a formula for the difference of two squares. The sum of two squares doesn't factor.
The formula to factor the difference of two squares, a2 - b2, is (a + b)(a - b).
8x8 squares.
The formula for quadrilaterals depends on what shape. Example.... Formula for rectangles: 2L x 2W Formula for squares: 4S
a2 - b2 = (a - b)(a + b)
a2 - b2 = (a - b)(a + b)