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How do you simplify #-4sqrt28#?

Answer 1

#-8##sqrt7#

#-4##sqrt28# can also be written #as# #rArr##-4##sqrt(7*4)# #rArr##-4##sqrt(7*2*2)# #rArr##-4##sqrt(7*2^2)# #rArr##-4##sqrt(7)# #sqrt(2^2)# #rArr##-4##sqrt(7)*2# #rArr##-8##sqrt(7)# #so# #the# final #ans# #is#:- (#-8##sqrt(7)#)

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Answer 2

Eva Adamson

To simplify (-4\sqrt{28}), you can first factor out the perfect square from the square root. (28) can be expressed as (4 \times 7), and (4) is a perfect square. So, (\sqrt{28} = \sqrt{4 \times 7} = \sqrt{4} \times \sqrt{7} = 2\sqrt{7}). Then, multiply (-4) by (2\sqrt{7}) to get (-8\sqrt{7}). So, (-4\sqrt{28}) simplifies to (-8\sqrt{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.