HW#4 (P1)_Unit 3 Review: Solve Equations (only positive roots)

Front

Solve: 5x² + 4x² = 189. Round to the nearest whole number.

Back

5

Front

Solving 11x = 65 means we divide by 11. What is the value of x to the nearest hundredth?

Back

5.91

Front

Solve: –5x + 4x = –33.

Back

33

Front

Solving x² = 56 means we need to do the square root of 56. What is the value of x to the nearest hundredth?

Back

7.48

Front

Solve: 7x – 20x = –54. Round to the nearest whole number.

Back

4

Front

What is the formula for solving a quadratic equation?

Back

The quadratic formula is x = (-b ± √(b² - 4ac)) / (2a).

Front

What does it mean to find the positive root of an equation?

Back

Finding the positive root means identifying the solution that is greater than zero.

Front

What is the first step in solving a linear equation?

Back

The first step is to isolate the variable on one side of the equation.

Front

What is the square root of a number?

Back

The square root of a number x is a value that, when multiplied by itself, gives x.

Front

How do you solve for x in the equation 3x + 5 = 20?

Back

Subtract 5 from both sides to get 3x = 15, then divide by 3 to find x = 5.