Understanding quadratic equations in one variable

This expression is in standard form: 2x² - 2x + 4

• Yes

• No

Mathematical Equivalence

OFF

Identify a, b, and c in: x²−6x+14

• 3,5,9

• 1,-6,14

• 1,-6,-14

• 1,6,14

Convert to standard form: 

 $y=\frac{1}{5}\left(x+10\right)^2-12$  

•  $y=\frac{1}{5}x^2+8$  

•  $y=x^2+4x+8$  

•  $y=\frac{1}{5}x^2+4x+8$  

•  $y=\frac{1}{5}x^2+20$  

What is the general form of a quadratic equation?

• ax^2 + bx + c = x

• ax^2 + bx + c = 1

• ax^2 + bx + c = 0

• ax^2 + bx = c

Identify c: f ( x ) = -12x² - x - 9

• -12

• -1

• 0

• -9

• a

• b

What is the a-value in the following quadratic equation?
 $y=-x^2+x-20$  

•  $a=-1$  

•  $a=1$  

•  $a=0$  

•  $a=-20$  

What is the standard form of a quadratic equation?

• f(x)=x

• f(x)=x²

• f(x)=ax²+bx+c

• f(x)=a(x-h)²+k