how do you factorise x^ - 5x? Probably really easy.?

👨🏻‍🏫 學術台數學

[匿名]

2010-02-15 4:07 pm

thanks if you can help! I always forget how to do it.

更新1:

i meant x^2 :)

回答 (4)

An ESL Learner

2010-02-15 4:36 pm

✔ 最佳答案

x^2 - 5x
= x(x) - x(5)
= x(x - 5)

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[匿名]

2010-02-15 4:13 pm

if it is x^2 - 5x = 0
x=0 or 5

if it is x^ - 5x = 0
then x=0 or x=5^

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[匿名]

2010-02-15 4:11 pm

idk if this is right... but i think you get the common multiple of the two so it would be "x" then i think you divide x and 5x by x.

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Iggy Rocko

2010-02-15 4:10 pm

Let a = the number you omitted after the caret.
x^a - 5x = x(x^(a - 1) - 5)

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