Solving by Quadratic Formula

Solving Quadratic Equations with the Quadratic Formula

Lesson 10.3B

Multiple Choice

How do you know there are two solutions?

• The discriminant is positive

• The discriminant is negative

• The discriminant is zero

Multiple Choice

How do you know there is one real solution?

• The discriminant is positive

• The discriminant is negative

• The discriminant is zero

Multiple Choice

How do you know there are no real solutions?

• The discriminant is positive

• The discriminant is negative

• The discriminant is zero

Fill in the Blanks

Solve the equation using the quadratic formula . Be sure to round your answer to four significant digits (0.000 or 00.00)

$x^2-14x+19=0$



Be sure to write your answer as  $x=x_1,x_2$   

Fill in the Blanks

Solve the equation using the quadratic formula . Be sure to round your answer to four significant digits (0.000 or 00.00)

$3x^2-11x-2=0$



Be sure to write your answer as  $x=x_1,x_2$   

Fill in the Blanks

Solve the equation using the quadratic formula . Be sure to round your answer to four significant digits (0.000 or 00.00)

$4x^2+8x-12=0$



Be sure to write your answer as  $x=x_1,x_2$   

Fill in the Blanks

Solve the equation using the quadratic formula . Be sure to round your answer to four significant digits (0.000 or 00.00)

$2x^2+12x+8=10$



Be sure to write your answer as  $x=x_1,x_2$   

Fill in the Blanks

Solve the equation using the quadratic formula . Be sure to round your answer to four significant digits (0.000 or 00.00)

$3x^2+5x+8=-2x+28$



Be sure to write your answer as  $x=x_1,x_2$   

Fill in the Blanks

Solve the equation using the quadratic formula . Be sure to round your answer to four significant digits (0.000 or 00.00)

$x^2-3x+5=0$



Be sure to write your answer as  $x=x_1,x_2$   

Fill in the Blanks

Solve the equation using the quadratic formula . Be sure to round your answer to four significant digits (0.000 or 00.00)

$9x^2-12x+4=0$



Be sure to write your answer as  $x=x_1,x_2$   

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