Question 1

In the equation 
$y = x^2 +5x +7$, match each leading coefficient with its correct letter.

Accepted Answer

a=1, b=5, c=7

Answer

a=0, b=5, c=7

Answer

a=7, b=5, c=1

Question 2

Suzie solves the equation below:
$x^2 + 4x - 12 = 2$
$(x - 2)(x + 6) = 2$, 
by setting $x -2 = 0$ and $x + 6 = 0$. 
Her solutions are $x = 2$ and $x = -6$.
Is Suzie correct? Why or why not?

Accepted Answer

No, she did factor correctly, but she didn't set the equation equal to zero .

Answer

No, she didn't factor correctly so the rest of her work is wrong.

Answer

Yes, she factored correctly and then used the zero product property

Answer

Yes, she factored correctly and then square rooted.

Question 3

What is this?

Accepted Answer

This is the quadratic formula.

Answer

This is the speed of light formula.

Answer

This is scary.

Answer

This is the zero product property.

Question 4

Solve by factoring: $3x^2 + 5x + 2 = 0$.

Accepted Answer

-2/3,  -1

Question 5

Solve $b^2+3b-2=0$. Round to the nearest hundredth if necessary.

Accepted Answer

-3.56, 0.56

Question 6

Solve  $x^2 + 4x - 40 = -8$. Round to the nearest hundredth if necessary.

Accepted Answer

-8, 4

Question 7

Solve $2x^2-x-5=0$. Round to the nearest hundredth if necessary.

Accepted Answer

1.85, -1.35

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