Jawabanmu

2014-08-24T15:56:53+07:00
37. (5x-4) (3x+2)
= 15x²+10x-12x-8
= 15x²-2x-8

38. (4x+3y) (cx+dy) = exz+23xy+6yz
nilai e...
4cx²+4dxy+3cxy+3dy² = exz+23xy+6yz
4cx²+3dy²+(4d+3c)xy = exz+23xy+6yz
- 4cx² = exz
- 3dy² = 23xy
- (4d+3c)xy = 6yz

gatau lagi yang 38, maap yah :(
2014-08-24T15:57:34+07:00
Aku jawab nomor 37 aja ya
(5x-4)(3x+2)
(5x.3x)+(5x.2)+(-4.3x)+(-4.2)
15x^ + 10x + (-12x) + (-8)
15x^ +10x - 12x -8
15x^ + -2x -8