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LuckyWell [14K]
3 years ago
9

I need help completing this problem ASAP

Mathematics
2 answers:
Sergio039 [100]3 years ago
6 0

Answer:

A.    8\sqrt{5}

Step-by-step explanation:

\sqrt{45} + \sqrt{125} =

= \sqrt{9 \times 5} + \sqrt{25 \times 5}

= 3\sqrt{5} + 5\sqrt{5}

= 8\sqrt{5}

Evgen [1.6K]3 years ago
5 0

Answer:

8 sqrt(5)

Step-by-step explanation:

sqrt(45) + sqrt(125)

Rewriting

sqrt(9*5) + sqrt( 25 *5)

we know sqrt(ab) = sqrt(a) sqrt(b)

sqrt(9) sqrt(5) + sqrt(25) sqrt(5)

3 sqrt(5)+5 sqrt(5)

Add like terms

8 sqrt(5)

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Step-by-step explanation:

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