HW#4 (Per1)_Unit 3 Review: Solve Equations (only positive roots)

Front

Solve: 2x² = 238

Back

x = 10.91

Front

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

Back

x = 5.91

Front

Solve: 7x – 20x = –54

Back

x = 4

Front

Solve: –5x + 4x = –33

Back

x = 33

Front

Solve: –2x² + 10x² = 88

Back

x = 4

Front

What is the first step to solve the equation 2x² = 238?

Back

Divide both sides by 2.

Front

What does it mean to isolate the variable in an equation?

Back

To get the variable by itself on one side of the equation.

Front

What is the quadratic formula used for?

Back

To find the roots of a quadratic equation.

Front

What is the definition of a positive root?

Back

A solution to an equation that is greater than zero.

Front

How do you check if your solution to an equation is correct?

Back

Substitute the solution back into the original equation.