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2) 9x kuadrat + 7x pngkt 3 - 8x kuadrat - 5x pngkt 3 = x kuadrat - 2x pngkt 3
3) 7a(1+b) - 3b(1+4) = 7a + 7ab - 3b - 3ab = 7a + 4ab - 3b
nmor 4 & 5 kerjakan sendiri yaa :)
2. 9x² + 7x³ - 8x² - 5x³ = 9x² - 8x² + 7x³ - 5x³ = x² + 2x³
3. 7a(1+b) - 3b(1+a) = 7a+7ab-3b-3ba = 7a + 4ab - 3b
4. 3b-bx per cx-3c = b(3-x) per -c(3-x) = b per -c
5. 3 per x + 1 ditambah 3 per x - 1 = 3(x-1) + 3 (x+1) per (x-1)(x+1) = 6x per (x-1)(x+1)