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Andrej [43]
2 years ago
6

Given f(x) = 3x2 + 7x and g(x) = 2x2 - X - 1, find f(x) + g(x).

Mathematics
2 answers:
avanturin [10]2 years ago
7 0
I believe the answer is.

5x^2 + 6x - 1
Sever21 [200]2 years ago
6 0

f(x) is a fancy way of saying y. So for now I will refer to y.

f(x)

y=3x+2+7x

g(x)

y=2x2-x-1

3x+2+7x+(2x2)-x-1 = f(x)+g(x)

Now lets add

10x+2+4-x-1=f(x)+g(x)

9x+5=f(x)+g(x)

Brainliest/Heart would help

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One angle of a triangle has a measure of 36°. The measure of the third angle is 28° less than 3 times the measure of the second
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Answer:

  1. Define your variable and write your equation:  36 + b + (3b-28) = 180°.
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a = 36

c = 3b - 28

a + b + c = 180°

a = measure of the first angle

b = measure of the second angle

c = measure of the third angle

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1)  36 + b + (3b-28) = 180   ⇒ )Define your variable. Write your equation and solve)

b + 3b + 36 - 28 = 180

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Check:

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