Simplify..
(3x - 6)^2
(5r + 2) ^2
2007-04-17 10:32:47 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
(3x - 6)² =
(3x - 6)(3x - 6) =
9x² - 18x - 18x + 36 =
9x² - 36x + 36
- - - - - - - s-
2007-04-17 11:25:25 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
(3x-6)^2
I think its 3x^2 +36
(5r + 2)^2
I think its 5r^2 + 4
2007-04-17 17:44:49 · answer #2 · answered by nena 1 · 0⤊ 0⤋
the first one is really (3x-6)(3x-6) if you want to use the foil method, multiply (3x)(3x) = 9x^2, then (3x)(-6) = -18x, then (-6)(3x) = -18x, and last (-6)(-6) = 36
if you want to use this horizontal method
3x-6
3x-6
-------
-18x -36
9x^2 -18x
then you add all these up and you have the answer
you do the same thing for the second one also
2007-04-17 17:41:09 · answer #3 · answered by h>>> 4 · 0⤊ 0⤋
9x^2+36
25r^2+4
2007-04-17 17:39:31 · answer #4 · answered by Amanda 3 · 0⤊ 0⤋