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Vesna [10]
3 years ago
12

This is the first part of a three-part problem. express $18\sqrt 8$ in the form $a\sqrt b$, where $a$ and $b$ are integers and $

b$ is as small as possible.
Mathematics
2 answers:
katen-ka-za [31]3 years ago
8 0

Answer:

18\sqrt{8}=36\sqrt{2}

Where a=36 and b=2 with b is small.

Step-by-step explanation:

Given problem 18\sqrt{8}

We have to write the given problem in form of a\sqrt{b}, where a and b are integers and b is as small as possible.

Consider the given problem 18\sqrt{8}

8 can be written in factored form as 2 × 2 × 2

Substitute, in given problem, we have

18\sqrt{8}=18\sqrt{2 \times 2\times 2}

This can be written as,

18\sqrt{2 \times 2\times 2}=18(\sqrt{4}\sqrt{2})

We know \sqrt{4}=2 , thus,

18(\sqrt{4}\sqrt{2})=18\cdot 2\sqrt{2}=36\sqrt{2}

Thus,18\sqrt{8}=36\sqrt{2}

Where a=36 and b=2 with b is small.

denis23 [38]3 years ago
6 0
For this case, the first thing we are going to do is rewrite the expression.
 We have then:
 (18) / root (8)
 (18) / root (2 * 4)
 (18) / 2 * root (2)
 (9) / root (2)
 Thus, the values of a and b are:
 a = 9
 b = 2
 Answer:
 a = 9
 b = 2
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