Multiply (3x – 1)(5x – 9)?

2009-08-09 5:42 pm

回答 (8)

2009-08-09 5:46 pm

✔ 最佳答案

15x2-33x+9

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2009-08-10 12:47 am

=15x^2-32x+9

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2009-08-11 1:53 am

15 x^2 - 27 x - 5 x + 9

15 x^2 - 32 x + 9

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2009-08-10 12:51 am

ok just foil it out...

the answer is 15x^2-32x+9

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2009-08-10 12:50 am

3 2 45 36

(3x-1)(5x-9)
2 45 36=7

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2009-08-10 12:50 am

15x^2-27x-5x+9 = 15x^2-32x+9

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2009-08-10 12:49 am

15x^2 - 32x + 9

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2009-08-10 12:48 am

(3x - 1)(5x - 9)
= 3x(5x) - 3x(9) - 1(5x) + 1(9)
= 15x^2 - 27x - 5x + 9
= 15x^2 - 32x + 9

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