Solving Quadratics Test Review

 $x^2\ -\ 64\ =\ 0\$  

Solve by factoring or square roots method.

• {-8, 8}

• {-32, 32}

• {0, 64}

• {8}

 $8x^2\ -\ 2x\ -\ 18\ =\ -15\$  

Solve by factoring:

•  $\left\{\frac{1}{2},\ -\frac{3}{4}\right\}$  

•  $\left\{-6,\ 4\right\}$  

•  $\left\{-\frac{1}{2},\ \frac{3}{4}\right\}$  

•  $\left\{-2,\ \frac{4}{3}\right\}$  

 $x^2\ +\ 3x\ =\ 40$  
Solve by factoring

• {-5, 8}

• {-8, 5}
  

• {-4, 10}

• {-20, 2}

 $2x^2\ +3x\ +\ 1=\ 0$  
Solve by factoring.

• {-2, 1}

• {-1, 2}

•  $\left\{\frac{1}{2},\ 1\right\}$  

•  $\left\{-\frac{1}{2},\ -1\right\}$  

 $4x^2\ -\ 8x\ +\ 3\ =\ 0$  
Solve by factoring.

•  $\left\{\frac{1}{2},\ \frac{3}{2}\right\}$  

•  $\left\{-\frac{5}{2},\ \frac{1}{2}\right\}$  

•  $\left\{-2,\ \frac{2}{5}\right\}$  

•  $\left\{-6,\ 2\right\}$  

 $4x^2\ +\ 24x\ =\ 0$  
Solve by factoring.

•  $\left\{-6,\ 0\right\}$  

•  $\left\{0,\ 6\right\}$  

•  $\left\{6\right\}$  

•  $\left\{-4,\ 0\right\}$  

 $x^2\ -\ 100\ =\ 0\$  
Solve by factoring or square roots.  Which answer BEST describes the solution.

• Only has 1 solution, which is 10

•  $\left\{-10,\ 10\right\}$  

•  $\left\{0,\ 10\right\}$  

• Only has 1 solution, which is -10

 $x^2\ =\ 81$  
Solve by square roots.  Which answer BEST describes the solution.

• Only has 1 solution, which is 9

• Only has 1 solution, which is -9

• Has 2 solutions, 9 and -9

• Has no solution

 $\left(2x\ -\ 5\right)^2\ =\ 25$  
Solve by square roots.

•  $\left\{-5,\ 0\right\}$  

•  $\left\{0,\ 5\right\}$  

•  $\left\{-\frac{2}{5},\ \frac{5}{2}\right\}$  

•  $\left\{5\right\}$  

 $\sqrt{48}$  

Simplify

•  $2\sqrt{12}$  

•  $16\sqrt{3}$  

•  $4\sqrt{3}$  

• Can not be simplified