Question

Find the sum. Write your answer in standard form. (2x3+4x2+3)+(3x3−3x−4)

Answer 1

`3.8*10^1`

Explanation:

So we'll be using PEMDAS, which is an acronym used to explain order of operations. It stands for P- Parentheses, E- Exponents, M- Multiplication, D- Division, A- Addition, and S- Subtraction.

P- Parentheses:

(2x3+4x2+3)+(3x3−(3x−4))

M- Multiplication (within Parentheses):

(6+8+3)+(9−(-12))

A- Addition (within Parentheses):

(6+8+3)+(9−(-12))

17 + 21

A- Addition:

38

Now, we'll take that number and put it in standard form, which is the number with only one number outside of the decimal times ten to the however many times it can be divided by ten.

So,

38/10 = 3.8

So,

3.8 * 10^1 is your answer.

Answer 2

5x³ + 4x² - 3x - 1

General Formulas and Concepts:

Algebra I

• Terms/Coefficients

Explanation:

Step 1: Define

Identify

(2x³ + 4x² + 3) + (3x³ - 3x - 4)

Step 2: Simplify

1. Combine like terms: 5x³ + 4x² - 3x - 1