Answer:
f(-2) = 26
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
f(x) = 3x² - 7x
f(-2) is x = -2
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em>: f(-2) = 3(-2)² - 7(-2)
- Exponents: f(-2) = 3(4) - 7(-2)
- Multiply: f(-2) = 12 + 14
- Add: f(-2) = 26
32 divided by (3+7) = 3.2
3.2x3= 9.6
3.2x7= 22.4
Therefore 9.6:22.4
Answer:
x-int: (-1, 0), (-11, 0)
y-int: (0, 11)
Step-by-step explanation:
To find x-int, set equation equal to 0:
x² + 12x + 11
(x + 1)(x + 11)
x = -11, -1
To find y-int, set <em>x</em> = 0
f(0) = 0² + 12(0) = 11
f(0) = 11
The one and the negative one
Given:
The equation 
goes through the coordinates (6,5) and (-2,-5).
To find:
The values of A and B.
Solution:
We have,
It goes through the coordinates (6,5) and (-2,-5). It means these points will satisfy the equation.
...(i)
...(ii)
Adding (i) and (ii), we get
Divide both sides by 4.
Put A=5 in (i), we get
Divide both sides by 5.
Therefore, the values of A and B are 5 and -4 respectively.
