3 years ago

Olga tried to solve an equation step by step.

1 answer:

8 0

Answer:step 3
Step-by-step explanation:
she should have multiplied 15 x 3=45
k=45

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The answer to the question is
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Slav-nsk [51]

Without a vale to substitute for the variable, we can only simplify the expression: since $8=4\cdot 2$ and $50 = 25\cdot 2$ , the expression becomes

$-4\sqrt{8m} + 7\sqrt{50m} = -4\sqrt{2\cdot 4m} + 7\sqrt{2\cdot 25m}$

Now use the property $\sqrt{ab} = \sqrt{a}\sqrt{b}\ \forall\ a,b\geq 0$

$-4\sqrt{4}\sqrt{2m} + 7\sqrt{25}\sqrt{2m} = -8\sqrt{2m}+35\sqrt{2m}$

Now we can factor $\sqrt{2m}$ :

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After the long math I did, I got 12.

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