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wariber [46]
3 years ago
7

If f(x)=x-6 and g(x)=x^1/2(x+3) what is f(x) times g(x

Mathematics
2 answers:
Keith_Richards [23]3 years ago
8 0
\bf \begin{cases}
f(x)=x-6\\
g(x)=x^{\frac{1}{2}}(x+3)
\end{cases}
\\\\\\
f(x)\cdot g(x)\implies (x-6)\cdot \left[ x^{\frac{1}{2}}(x+3) \right]\implies (x-6)\cdot \left[ \stackrel{distributing}{x^{\frac{3}{2}}+3x^{\frac{1}{2}}} \right]

\bf x\left( x^{\frac{3}{2}}+3x^{\frac{1}{2}} \right)-6\left( x^{\frac{3}{2}}+3x^{\frac{1}{2}} \right)
\\\\\\
x^{\frac{5}{2}}+3x^{\frac{3}{2}}~~-~~6x^{\frac{3}{2}}-18x^{\frac{1}{2}}\implies \stackrel{\textit{adding like-terms}}{x^{\frac{5}{2}}-3x^{\frac{3}{2}}-18x^{\frac{1}{2}}}
\\\\\\
\stackrel{\textit{common factoring}}{x^{\frac{1}{2}}\left( x^{\frac{4}{2}}-3x^{\frac{2}{2}}-18 \right)}\implies x^{\frac{1}{2}}(x^2-3x-18)\implies x^{\frac{1}{2}}(x-6)(x+3)
dimaraw [331]3 years ago
7 0
This  is (x - 6)*x^1/2(x + 3)

= x^1/2 (x^2 - 3x - 18)

= x^(5/2) - 3x^(3/2) - 18x^(1/2)
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Bharat types 20 words/min. How many words can he type in each length of time? a) 5 min b) 30 min c) 23 min
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Bharat can type words in lengths of time as 100 words, 600 words, and 460 words in 5 minutes, 30 minutes, and 23 minutes respectively.

<h3>What are Arithmetic operations?</h3>

Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions.

* Multiplication operation: Multiplies values on either side of the operator

For example 12×2 = 24

Bharat types 20 words per minute which are given in the question.

To determine the number of words can he type in each length of time

We have to multiply the time by his typing speed.

The number of words that can be typed by Bharat in 5 minutes :

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The number of words that can be typed by Bharat in 30 minutes :

⇒ 20 × 30

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The number of words that can be typed by Bharat in 23 minutes :

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Therefore, He can type words in lengths of time as 100 words, 600 words, and 460 words in 5 minutes, 30 minutes, and 23 minutes respectively.

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