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How do you simplify #-3sqrt7+4sqrt7#?

Answer 1

#-3sqrt(7)+4sqrt(7)=color(green)(sqrt(7))#

#-3 " squid" + 4 " squid"= +1 " squid"#

In this example we have simply replaced #"squid"# with #sqrt(7)# so #-3sqrt(7)+4sqrt(7) = +1sqrt(7)# (or just: #sqrt(7)#)

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Answer 2

Hazel Anglin

To simplify -3√7 + 4√7, you can combine the like terms. The like terms in this case are the terms with the same radical (√7). Therefore, the simplified form is √7.

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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.

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