3 years ago

HELP!!! 8x48/98-100+54=?

1 answer:

7 0

Answer:

-42.08163265

Step-by-step explanation:

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DiKsa [7]

Answer:

21 $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplifying $\sqrt{45}$

= $\sqrt{9(5)}$ = $\sqrt{9}$ × $\sqrt{5}$ = 3 $\sqrt{5}$

Then

3 $\sqrt{5}$ + 6 $\sqrt{45}$

= 3 $\sqrt{5}$ + 6(3 $\sqrt{5}$ )

= 3 $\sqrt{5}$ + 18 $\sqrt{5}$

= 21 $\sqrt{5}$

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3 years ago