Question

Can someone help me im looking for the the x

Answer 1

x = 4√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

Equality Properties

Trigonometry

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

• a is one leg
• b is another leg
• c is hypotenuse

Explanation:

Step 1: Identify Variables

a = 19

b = x

c = 21

Step 2: Solve for x

1. Substitute [PT]: 19² + x² = 21²
2. Isolate x term: x² = 21² - 19²
3. Exponents: x² = 441 - 361
4. Subtract: x² = 80
5. Isolate x: x = √80
6. Simplify: x = 4√5