Jabarkanlah : a.-5(x^3-x^2+5x) b.(6a+4) (a+2) Sama caranya ya pliss besok dikumpulkan

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Ditanya :
• -5(x³- x² + 5x)
• (6a + 4)(a + 2)

Jawab :

-5(x³- x² + 5x)
(-5 x x³) + (5 x x²) - (5 x 5x)
-5x³ + 5x² - 25x

Kenapa bisa + 5x² karena -5 dikali dengan - x².

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(6a + 4)(a + 2)
(6a x a) + (6a x 2) + (4 x a) + (4 x 2)
6a² + 12a + 4a + 8
6a² + 16a + 8

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