(3x^2)(2x^2 - 7x +10)?

2008-09-03 5:43 am

Simplify the following.

(3x2)(2x2 - 7x +10)
A. 5x^4 - 10x^3 + 13x^2
B. 6x^4 + 21x^3 + 30x^2
C. 6x^4 - 21x^2 + 30x^2
D. 6x^4 - 21x^3 + 30x^2

回答 (6)

2008-09-03 5:53 am

✔ 最佳答案

84 - 42x

None of the answers are correct because none of them are simplified.

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2008-09-03 12:55 pm

= 3x^2(2x^2 - 7x + 10)
= 6x^4 - 21x^3 + 30x^2

Answer: D. 6x^4 - 21x^3 + 30x^2

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2008-09-03 4:09 pm

6x^4 - 21xÂ³ + 30xÂ²
OPTION D

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2008-09-03 3:47 pm

3x^2(2x^2 - 7x + 10)
= 3x^2*2x^2 - 3x^2*7x + 3x^2*10
= 6x^4 - 21x^3 + 30x^2
(answer D)

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2008-09-03 12:51 pm

(3x^2)(2x^2 - 7x +10)

= (3x^2)(2x^2) - (3x^2)(7x) + (3x^2)(10)

= 6x^4 - 21x^3 + 30x^2

Answer: D

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2008-09-03 12:49 pm

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