All categories

3 years ago

Evaluate the expression when X= -2 x^2 + 9x + 3

Mathematics

1 answer:

TiliK225 [7]3 years ago

3 0

Answer:

-11

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

x² + 9x + 3

x = -2

Step 2: Evaluate

Substitute in x: (-2)² + 9(-2) + 3
Exponents: 4 + 9(-2) + 3
Multiply: 4 - 18 + 3
Subtract: -14 + 3
Add: -11

You might be interested in

What set or sets does the number 15 belong to

Furkat [3]

Answer:

composite

Step-by-step explanation:

5 0

3 years ago

Please help this is due tommorrow

irakobra [83]

Answer:

25%

Step-by-step explanation:

there are 4 cards, and the probability that you choose the one with #5 is 25%

6 0

4 years ago

What is the gradient of the graph shown?

sammy [17]

Answer:

-1/2

Because, for every one square, the line goes down by 1/2.

5 0

3 years ago

Read 2 more answers

Use Pascal's Triangle to determine the second term of the expansion of (x - 2)^5

goldfiish [28.3K]

Pascal's triangle up to the 5th iteration is

$\begin{array}{cccccc}1\\1&1\\1&2&1\\1&3&3&1\\1&4&6&4&1\\1&5&10&10&5&1\end{array}$

This tells us

$(x-2)^5=\boxed{1}x^5(-2)^0+\boxed{5}x^4(-2)^1+\boxed{10}x^3(-2)^2+\boxed{10}x^2(-2)^3+\boxed{5}x^1(-2)^4+\boxed{1}x^0(-2)^5$

so the second term in the expansion is

$5x^4(-2)^1=\boxed{-10x^4}$

8 0

3 years ago

Please write it down step by step :)

grandymaker [24]

Answer:

-6

Step-by-step explanation:

Some nasty order of operations coming up.

Firstly, deal with that squared:

-12 / 3 * (-8 + 16 - 6) + 2

Simplify the bracket:

-12 / 3 * 2 + 2

Simplify -12 / 3:

-4 * 2 + 2

Simplify -4 * 2:

-8 + 2

Simplify:

-6

3 0

3 years ago