Try integration by parts, (twice, I think) with u=(x+1) and dv/dx=cosx
(x-2)(x+2)= x2+2x-2x-4= x2-4
(:)+< Open bracket, :, close bracket, plus, < less then
7C MINUS bracket open c plus 2 bracket close equals 7c minus c minus 2 equals 6c minus 2
you first solve the inside of the bracket and then do the inside answer with the outside numbers.
2(2*1) = 2(2) = 4
-(3x-4) = -3x + 4
sure... I bet lots of people can simplify this... How 'bout 5x sq -15
:) colon then close bracket :( colon then open bracket :D colon then D XD X then D Those are just a few!
2(2*4-5)+6 = 12
I think I'm answering my own quezstion here but hey. Am I right in saying that (x+0)(x+1) Factorises to x2+ x? I think I am.
sounds like 21: (7 x 2) is 14, plus 7 is 21
-3(2x + 1)(4 + 3x) = -3[8x + 6x2 + 4 + 3x] = -3[6x2 + 11x + 4] = -18x2 - 33x - 12.