Question

Check if x=-1 is a solution to x3 + 3x^2 = x+3. Which statement do you get?

A. 1=1
B. 0=0
C. 4= 4
D. 2 = 2

Answer 1

D. 2 = 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Explanation:

Step 1: Define

x³ + 3x² = x + 3

x = -1

Step 2: Check

1. Substitute in x: (-1)³ + 3(-1)² = -1 + 3
2. Evaluate exponents: -1 + 3(1) = -1 + 3
3. Multiply: -1 + 3 = -1 + 3
4. Add: 2 = 2