i think i got this one right?

👨🏻‍🏫 學術台數學

[匿名]

2009-03-28 10:03 am

Problem : (5x^2-2x-34) +(7x^2+6x)
Answer: 12x^2+4x-34

回答 (8)

[匿名]

2009-03-28 11:07 am

✔ 最佳答案

= (5x^2 + 7x^2) + (-2x + 6x) - 34
= 12x^2 + 4x - 34

Yupp. It's right, alright!

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[匿名]

2009-03-28 5:54 pm

Yep :)
5x^2 + 7x^2 -2x +6x -34 = 12x^2 + 4x -34

參考: High School algebra

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[匿名]

2009-03-28 5:14 pm

Yeah it's right

參考: my own knowledge

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Engr. Ronald

2009-03-28 5:12 pm

yes, your correct...

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[匿名]

2009-03-28 5:12 pm

correct --------- well done

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[匿名]

2009-03-28 5:08 pm

Good job.

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[匿名]

2009-03-28 5:08 pm

Correct :)

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An ESL Learner

2009-03-28 7:23 pm

(5x^2 - 2x - 34) + (7x^2 + 6x)
= 5x^2 - 2x - 34 + 7x^2 + 6x
= 5x^2 + 7x^2 - 2x + 6x - 34
= 12x^2 + 4x - 34 or 2(6x^2 + 2x - 17)

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