Respuesta :

Space

Answer:

C. ±5

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

Algebra I

  • Equality Properties
  • Solving Quadratics
  • Multiple Roots

Step-by-step explanation:

Step 1: Define

2x² = 50

Step 2: Solve for x

  1. Divide 2 on both sides:                    x² = 25
  2. Square root both sides:                    x = ±5

Step 3: Check

Plug in x into the original equation to verify it's a solution.

x = 5

  1. Substitute in x:                    2(5)² = 50
  2. Exponents:                          2(25) = 50
  3. Multiply:                               50 = 50

Here we see that 50 does indeed equal 50.

∴ x = 5 is a solution to the equation.

x = -5

  1. Substitute in x:                    2(-5)² = 50
  2. Exponents:                          2(25) = 50
  3. Multiply:                               50 = 50

Here we see that 50 does indeed equal 50.

∴ x = -5 is a solution to the equation.

Otras preguntas