Jawabanmu

2014-08-22T16:17:51+07:00
1. (x²-x-30)
2.(x²-8x+15)
3.(x²-12x+36)
2014-08-22T16:21:24+07:00
1. (x-6) (x+5) = x(x+5) - 6(x+5) = xkuadrat + 5x - 6x - 30 = xkuadrat - x - 30
2. (x-5) (x-3) = x(x-3) - 5 (x-3) = xkuadrat - 3x - 5x + 15 = xkuadrat - 8x + 15
3. (x-6)kuadrat = (x-6) (x-6) = x(x-6) -6(x-6) = xkuadrat - 6x - 6x + 36 = x kuadrat - 12x + 36
no 1. gak salah tuh
hm,, insya Allah gak. coba aja teliti !
30 deh kayaknya