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How do you factor #2x^2 - 40x#?

Answer 1

#2x(x-20)#

Remember that factoring means to "take out" a common factor from each term, namely one from #2x^2# and one from #40x#.

It happens to be the case that both, #2x^2# and #40x# are divisible by #2#, and both share an #x#, which means that we can take out a #2# as well as an #x#, giving us

#2x^2 - 40x -> 2x(x-20)#

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Answer 2

Avery Alexander

To factor 2x^2 - 40x, you can first factor out the greatest common factor, which is 2x. Then, you are left with x(2x - 20). Finally, you can factor out another common factor, which is 2, to get the factored form as 2x(x - 10).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.