Quadratic Equation

Find the roots of this equation
x² + x - 6 = 0

• 4, -1

• 3, -2

• -6, 1

• 2, -3

Tags

CCSS.HSA-REI.B.4B

Standard form of a quadratic equation

• y=x²

• y=ax²+bx+c

• y=mx+b

• y=x

Say 'TRUE' or 'FALSE'
A quadratic equation ax² + bx + c = 0 has equal roots, then b² - 4ac = 0 

• TRUE

• FALSE

Tags

CCSS.HSA-REI.B.4B

Solve the equation using the quadratic formula.

4x² +9x = 12x

• x = {0, 3/4}

• x = {0, -3/4}

• x = {0, 4/3}

• no solution

Tags

CCSS.HSA-REI.B.4B

• -1 and 3
• 1 and -3
• -1 and -3
• 1 and 3

What are the solutions to the quadratic equation?

• x = -4

• x = 1

• x = -1

• x = 2

• x = 4

Select the solutions to the equation

4x² + 11x + 7 = 0

• x = - 1.75

• x = 6

• x = - 1

• x = 1

Solutions of a quadratic equation are also called

• roots

• x-intercepts

• zeros

• All of the above

The quadratic function y = -2x² + 4x + 6 is pictured. What are the solutions to the equation 7.5 = -2x² + 4x + 6?

• x = 0.5

• x = 1.5

• x = 1

• x = 8

• x = 6

When solving a quadratic equation, if you have the number under the radical what would your answer look like?

• 1 answer

• no real solution

• 2 decimals/radicals

• 2 whole/fractions

Tags

CCSS.HSA-REI.B.4B