2 years ago

Help number 21 plzzz

1 answer:

8 0

Answer:

B. C

Step-by-step explanation:

thats what I think it is

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oksian1 [2.3K]

Which question are you trying to answer

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3 years ago

loris [4]

Hello!

We have the following expression:

$2a\cdot a\cdot3a+b\cdot4b$

Let's multiply and simplify it, look:

$6a^3+4b^2$

We multiply a*a*a, so we can rewrite it as a³. The same with b*b as b².

So, the answer in the simplified form is:

6a³ + 4b²

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11 months ago

Akimi4 [234]

$\dfrac{2+\sqrt5}{2-\sqrt5}=\dfrac{(2+\sqrt5)^2}{4-5}=\dfrac{4+4\sqrt5+5}{-1}=-(9+4\sqrt5)=-9-4\sqrt5$

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3 years ago