Question

What is the output value of (4x+2)(x-5)/2 using input value of x=2

Answer 1

(4x+2)(x-5)/2

(4 . 2 + 2)(2 - 5)/2

(8 + 2)(- 3)/2

10/2 . (- 3)

5 . (- 3)

- 15

Answer: - 15

Answer 2

-15

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

(4x + 2)(x - 5) / 2

x = 2

Step 2: Evaluate

1. Substitute: (4 · 2 + 2)(2 - 5) / 2
2. Parenthesis - Multiply: (8 + 2)(2 - 5) / 2
3. Parenthesis - Add: 10(2 - 5) / 2
4. Parenthesis - Subtract: 10(-3) / 2
5. Multiply: -30 / 2
6. Divide: -15