Lesson 15 Applying the Quadratic Formula

Lesson 15 Applying the Quadratic Formula

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Multiple Select

Select all the equations that have 2 solutions.

•  $\left(x+3\right)^2=9$  

•  $\left(x-5\right)^2=-5$  

•  $\left(x+2\right)^2-6=0$  

•  $\left(x-9\right)^2+25=0$  

•  $\left(x-8\right)^2=0$  

Open Ended

Open Ended

Multiple Choice

Rewrite each quadratic expression in standard form.

(x+1)(7x+2)

• $7x^2+2x+7x+2$

• $7x^2-9x+2$

• $7x^2+9x+2$

• $14x^2+9x+2$

Multiple Choice

Rewrite each quadratic expression in standard form.

(8x+1)(x-5)

•  $8x^2+1x-5$ 

•  $8x^2-39x-5$ 

•  $8x^2-40x-5$ 

•  $8x^2-39x+5$ 

Multiple Choice

Rewrite each quadratic expression in standard form.

(2x+1)(2x-1)

•  $4x^2+x-1$ 

•  $4x^2-x-1$ 

•  $4x^2-1$ 

•  $4x^2+1$ 

Open Ended

Fill in the Blank

 $4x^2-4x-15=0$  

Solve using the quadratic formula, type your answer as x=_, x=_
with the two solutions rounded to two decimal places, as necessary, and one space after the comma.