Jawabanmu

Jawaban paling cerdas!
2014-09-01T19:52:33+07:00
1. (x+1) (3x-8) = 3x² - 8x + 3x - 8 = 3x² - 5x - 8
2. (3x-2) (2x-4) = 6x² - 12x - 4x + 8 = 6x² - 16x + 8
3. (2x-1) (1-x) = 2x - 2x² - 1 + x = 3x - 2x² - 1
4. (x²+4x) (3x-7) = 3x² - 7x² + 12x² - 28x = 3x² + 5x² - 28x
5. (x+y) (x+y) = x² + xy + xy + y² = x² + 2xy + y²
6. (a+b) (x+y) = ax + ay + bx + by