3 years ago

How to solve this problem 9-0.2(4-7)^3

Mathematics

1 answer:

kkurt [141]3 years ago

7 0

Answer:

3.6

Step-by-step explanation:

9-0.2(4-7)^3

9-0.2(-3)^3

9 -0.2 (-27)

9-5.4=3.6

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Answer:

Sum of $\frac{7x}{x^2-4}$ and $\frac{2}{x+2}$ is $\mathbf{\frac{9x-4}{x^2-4}}$

Option B is correct answer.

Step-by-step explanation:

We need to find sum of $\frac{7x}{x^2-4}$ and $\frac{2}{x+2}$

Finding sum of $\frac{7}{x^2-4}$ and $\frac{2}{x+2}$ :

$\frac{7x}{x^2-4}+\frac{2}{x+2}$

We know that $x^2-4 =(x+2)(x-2)$

Replacing x^2-4

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Now, taking LCM of (x+2)(x-2) and (x+2) we get (x+2)(x-2)

$=\frac{7x+2(x-2)}{(x+2)(x-2)}\\=\frac{7x+2x-4}{(x+2)(x-2)}\\=\frac{9x-4}{(x+2)(x-2)}\\=\frac{9x-4}{x^2-4}$

So, Sum of $\frac{7x}{x^2-4}$ and $\frac{2}{x+2}$ is $\mathbf{\frac{9x-4}{x^2-4}}$

Option B is correct answer.

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2 years ago

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MrRissso [65]

Answer:

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Step-by-step explanation:

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Option B (2, -2) is correct.

Step-by-step explanation:

Have a great day! :)

and can I plz have brainliest?

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