-4x^5(2x^2+5) simplify?
回答 (6)
2009-06-27 10:37 am
✔ 最佳答案
-4x^5(2x^2+5)=-8x^7-20x^5answer//
2009-06-27 5:50 pm
(-4x^5*2x^2)+(-4x^5*5)= -8x^7-20x^5
2009-06-27 5:43 pm
- 8 x^7 - 20 x^5
2009-06-27 5:43 pm
Expand.
-4x^5(2x^2 + 5)
= -4x^5(2x^2) - 4x^5(5)
= (-4 * 2)[x^(5 + 2)] - (4 * 5)(x^5)
= -8x^7 - 20x^5
-4x^5(2x^2 + 5)
= -4x^5(2x^2) - 4x^5(5)
= (-4 * 2)[x^(5 + 2)] - (4 * 5)(x^5)
= -8x^7 - 20x^5
2009-06-27 5:40 pm
8 x ^ 7 - 20 x ^ 5
2009-06-27 5:34 pm
-4x^5(2x^2+5)
Multiply the (-4x^5) term by both terms within the parentheses, then add:
(-4x^5)(2x^2) + (-4x^5)(5) = -8x^7 - 20x^5.
Multiply the (-4x^5) term by both terms within the parentheses, then add:
(-4x^5)(2x^2) + (-4x^5)(5) = -8x^7 - 20x^5.
參考: basic algebra training
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