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Evgen [1.6K]
3 years ago
7

Simplify the expression 5√2 + √18

Mathematics
2 answers:
ivanzaharov [21]3 years ago
6 0

Answer:

\large\boxed{5\sqrt2+\sqrt{18}=8\sqrt2}

Step-by-step explanation:

5\sqrt2+\sqrt{18}=5\sqrt2+\sqrt{9\cdot2}\\\\\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\=5\sqrt2+\sqrt9\cdot\sqrt2=5\sqrt2+3\sqrt2=(5+3)\sqrt2=8\sqrt2

Naddik [55]3 years ago
4 0

Answer:

8√2

Step-by-step explanation:

Simplify √18 which is 3√2

5√2+3√2=8√2

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so, hmm which are those? let's check, let's set the denominator to 0, and solve for "x".

\bf x^2+6x-7=0\implies (x+7)(x-1)=0\implies x=
\begin{cases}
-7\\
1
\end{cases}
\\\\\\
\textit{let's check, } x=-7\quad \cfrac{(-7)+2}{(-7)^2+6(-7)-7}\implies \cfrac{-5}{49-42-7}\implies \cfrac{-5}{0}
\\\\\\
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3 years ago
Five friedns share three pizzas that cost 12.75 how much do each of them pay
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Step-by-step explanation:

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3 0
2 years ago
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