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Naddik [55]
3 years ago
6

If f(x) = 3x2 – 2x + 4 , what is the value of f(-2)?

Mathematics
1 answer:
bogdanovich [222]3 years ago
6 0

Answer:

20

Step-by-step explanation:

f(x)= 3x²-2x+4

f(-2)=3×(-2)²-2(-2)+4

=3×4)+4+4

=12+4+4

=20

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Find the difference.<br><br> (3x3−2x2+4x−8)−(5x3+12x2−3x−4)=
Lunna [17]

Answer:

-2x³ - 14x² + 7x - 4

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

(3x³ - 2x² + 4x - 8) - (5x³ + 12x² - 3x - 4)

<u>Step 2: Simplify</u>

  1. [Distributive Property] Distribute negative:                                                    3x³ - 2x² + 4x - 8 - 5x³ - 12x² + 3x + 4
  2. Combine like terms (x³):                                                                                   -2x³ - 2x² + 4x - 8 - 12x² + 3x + 4
  3. Combine like terms (x²):                                                                                   -2x³ - 14x² + 4x - 8 + 3x + 4
  4. Combine like terms (x):                                                                                    -2x³ - 14x² + 7x - 8 + 4
  5. Combine like terms:                                                                                         -2x³ - 14x² + 7x - 4
7 0
3 years ago
4
Scilla [17]

Answer:

Step-by-step explanation:

3 0
3 years ago
What is the constant of variation for the inverse variation? xy = 8
Advocard [28]

Answer:

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Step-by-step explanation:

The constant of variation is the constant in the equation: 8.

___

The equation can be rewritten to be

  y = 8/x

Compared to the generic equation for inverse variation, ...

  y = k/x

we see that the constant of variation (k) is the constant in the given equation, 8.

6 0
3 years ago
Can someone help me please
Iteru [2.4K]

Answer:

1) 3.75

2)0.833333

3)3.66666

Step-by-step explanation:

See photo for Step-bystep explanation

3 0
2 years ago
The quotient of a number and -7 decreased by 2 is 10 find the number
yarga [219]
X/-7 -2 =10
x/-7 = 12
x = -84
7 0
2 years ago
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