4 years ago

What are the dimensions of a rectangular box with a volume of 50b^3 + 75b^2 - 2b - 3?

Mathematics

1 answer:

const2013 [10]4 years ago

5 0

(A) is the correct answer choice:)

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Answer:

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Step-by-step explanation:

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3 years ago

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Simplifying $\frac{\frac{4x^2+2x}{x^2+x-2}}{\frac{8x^2+4x}{3x^2+10x+8}}$ we get $=\frac{3x+4}{2(x-1)}$

Option D is correct.

Step-by-step explanation:

We need to simplify:

$\frac{\frac{4x^2+2x}{x^2+x-2}}{\frac{8x^2+4x}{3x^2+10x+8}}$

It can be written as:

$\frac{4x^2+2x}{x^2+x-2}\div {\frac{8x^2+4x}{3x^2+10x+8}\\=\frac{2x(2x+1)}{x^2+2x-x-2}\div {\frac{4x(2x+1}{3x^2+6x+4x+8}\\=\frac{2x(2x+1)}{x(x+2)-1(x+2)}\div {\frac{4x(2x+1}{3x(x+2)+4(x+2)}\\$

$=\frac{2x(2x+1)}{(x-1)(x+2)}\div {\frac{4x(2x+1)}{(3x+4)(x+2)}$

Converting division sign into multiplication:

$=\frac{2x(2x+1)}{(x-1)(x+2)}\times \frac{(3x+4)(x+2)}{4x(2x+1)}\\$

Simplifying:

$=\frac{3x+4}{2(x-1)}$

So, simplifying $\frac{\frac{4x^2+2x}{x^2+x-2}}{\frac{8x^2+4x}{3x^2+10x+8}}$ we get $=\frac{3x+4}{2(x-1)}$

Option D is correct.

Keywords: Simplify the Rational Expression

Learn more about Simplifying the Rational Expression at:

#learnwithBrainly

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4 years ago

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