Jawabanmu

2014-09-09T17:36:39+07:00
2014-09-09T17:42:34+07:00
5. 2(x - 3)², x = 1 >> 2(1 - 3)² = 2(-2)² = 2x4= 8
6. KPK bentuk aljabar 5xy² dan 25x²y = 25x²y²
7. (2 - t)(2t + 3), t = 3 >> (2 - 3)(2x3 + 3) = 12+6-18-9 = -9
8. a = 1, b = -1, c = 2
2ab + bc - 3ac² = (2x1x-1)+(-1x2) -(3x1x4) = -2-2-12 = - 16