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= 5x - x + 4y - 2y
= 4x + 2y
b) 6a² - 2ab - 3a(a + b)
= 6a² - 2ab - 3a² - 3ab
= 3a² - 5ab
= a(3a - 5b)
c) 2xy(x - 1) + xy
= 2x²y - 2xy + xy
= 2x²y - xy
b) 6a² - 2ab - 3a(a+b) = 6a² - 2ab - 3a² -3ab = 3a² - 5ab
c) 2xy (x-1) + xy = 2x²y - 2xy + xy = 2x²y - xy
Suku yang sejenis dapat dijumlahkan atau dikurangkan.
Semoga Membantu ^^