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Lerok [7]
3 years ago
5

What is the exact value of the expressions the square root of 180. − the square root 125. + the square root of 5.? Simplify if p

ossible.
A) 2the square root of 2.
B) 12the square root of 2.
C) 2the square root of 5.
D) 12the square root of 5.

Mathematics
2 answers:
blagie [28]3 years ago
8 0

Answer:

2\sqrt{5}

C is the correct option.

Step-by-step explanation:

The given expression is \sqrt{180}-\sqrt{125}+\sqrt{5}

In order to simplify the expression, we find the factors.

180 =6 ×6×5

125 = 5 ×5×5

Hence, we can rewrite the expression as

\sqrt{6\times6\times5}-\sqrt{5\times5\times5}+\sqrt{5}

We can further write this expression as

\sqrt{6^2\times5}-\sqrt{5^2\times5}+\sqrt{5}

Now, we can use the rule \sqrt{x^2}=x

6\sqrt{5}-5\sqrt{5}+\sqrt{5}

Finally, we can combine these like terms

2\sqrt{5}

Hence, C is the correct option.

Temka [501]3 years ago
4 0
I hope this helps you

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