Solving quadratic equations by extracting the square roots

What is the square root of 36?

• $\pm\ 6$

• $\pm9$

• $\pm\ 4$

• $\pm12$

Tags

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4

Which of the following is a square root sign?

• $X^2$

• $\sqrt{b}$

• $\left|x\right|$

• $2x^3$

A _______ of a number is a value that can be multiplied by itself to give the original number.

• sum

• real number

• square root

• constant

The equation 𝑥 2 = 𝑐, (𝑐 < 0) has ____________ solutions?

• none

• one

• two

• three

What is the standard form of quadratic equations?

• $ax^2+bx+c\ =\ 0$

• $ax\ +b=c$

• $ax^2\ =c$

• $ax^2-bx\ =\ c$

To simplify

 $2x\left(3x-8\right)=0$ , what property must be applied?

• ADDITION PROPERTY OF EQUALITY

• MULTIPLICATION PROPERTY OF EQUALITY

• CUMMUNITATIVE PROPERTY

• DISTRIBUTIVE PROPERTY

What is an equation with the highest exponent of the variable is two?

• Linear Equation

• Quadratic Equation

• Absolute Value

• Polynomial Equation

What are the roots of quadratic equation 

 $x^2-49=0$  ?

•  $\pm7$  

•  $\pm1$  

•  $\pm8$  

•  $\pm4$  

Applying the method extracting the square roots, solve for b of quadratic equation

 $2b^2-32=0$  .

•  $\pm8$  

•  $\pm4$  

•  $\pm2$  

•  $\pm1$  

What are the roots of the quadratic equation

 $25a^2=\ 81$  .

•  $\pm\frac{9}{5}$  

•  $\pm9$  

•  $\pm\frac{5}{9}$  

•  $\pm5$