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atroni [7]
3 years ago
6

Confused can someone help

Mathematics
2 answers:
Alex3 years ago
7 0

Answer:

B.   3x^2 - 2x - 1.

Step-by-step explanation:

(f + g)x = f(x) + g(x)

= -4x + 3 + 3x^2 + 2x - 4

Adding like terms we get the answer:

= 3x^2 - 2x - 1.

svet-max [94.6K]3 years ago
7 0
<h2>Hello!</h2>

The answer is:

B. (f+g)(x)=3x^{2} -2x-1

<h2>Why?</h2>

To solve the problem, we need to add/subtract like terms. The like terms are the terms that share the same variable and the same exponent.

For example:

x^{2} +3x^{2} +5x^{3}=4x^{2}+5x^{3}

We were able to add the terms that were squared since both shares the same variable and the same exponent.

So, we are given the functions:

f(x)=-4x+3\\g(x)=3x^{2} +2x-4

Now, we are asked to calculate (f+g)(x) which is also equal to f(x) + g(x).

Then, calculating we have:

(f+g)(x)=(-4x+3)+(3x^{2} +2x-4)\\\\(f+g)(x)=3x^{2} -4x+2x+3-4\\\\(f+g)(x)=3x^{2} -2x-1

Hence, the answer is:

B. (f+g)(x)=3x^{2} -2x-1

Have a nice day!

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Answer: x=-2 y=2

Step-by-step explanation:

I decided that isolating the y value of the second equation is the best way to start solving.

I divide 3 from both sides to get y= (4-x)/3. With this, I can substitute into the first equation. 4x+3(4-x)/3)=-2.

The multiplying the 3 by the denominator three cancels each other out to make:

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2 years ago
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almond37 [142]

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One really simple way to find an equivalent fraction is just to multiply the numerator and denominator.

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ch4aika [34]

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Step-by-step explanation:

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4 0
3 years ago
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Simplify: a + 4b+9 +6a +2a
Anit [1.1K]

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