7.T Unit 7 Test Corrections

Which value of x is the solution to this equation?

 

5x² = 30x − 45

• x=3

• x=-3

• x=5

• x=-5

What is the positive solution to x² + 9x − 22 = 0?

Which value of x is a solution to this equation?

 

3x²− 30x − 72 = 0

• x=-12

• x=-4

• x=-2

• x=-6

What is the solution set for 2x² + 15 = −11x?

• {−5, −1.5}

• {2.5, 3}

• {1.5, 5}

• {−3, −2.5}

What is the positive solution to this equation?

4x² + 12x = 135

Which value of x is a solution to this equation?

5 x ² - 36 x + 36 = 0

• x=-6

• x=4

• x=-1.8

• x=1.2

• 92