Distribute: -2x(3x + 4 - 5x²)?
回答 (3)
2008-10-11 4:10 pm
✔ 最佳答案
-2x(3x + 4 - 5x^2)= -2x*3x - 2x*4 + 2x*5x^2
= 10x^3 - 6x^2 - 8x
2008-10-11 3:48 pm
.2x(3x)+-2x(4)--2x(5x^2)
-6x+-8x+10x^3
Simple really, after a few years.
-6x+-8x+10x^3
Simple really, after a few years.
2008-10-11 3:43 pm
-2x(3x + 4 - 5x²) = 10x^3 - 6x^2 - 8x
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https://hk.answers.yahoo.com/question/index?qid=20081011074109AANsqER