Unit 5 Test corrections

Convert the equation y= x²-2x-5 into vertex form. 

• y= (x-1)²-6
• y= -(x-1)²-6
• y= (x+1)²-6
• y= -(x+6)²-1

Which of the following shows
f(x) = x² + 12x - 2
written in vertex form?

• f(x) = (x + 6)² + 142
• f(x) = (x + 6)² - 34
• f(x) = (x + 6)² - 38
• f(x) = (x + 6)² + 34

Which of the following shows
f(x) = x² - 8x + 1
written in vertex form?

• f(x) = (x - 4)² - 15
• f(x) = (x - 4)² + 17
• f(x) = (x - 4)² - 17
• f(x) = (x - 4)² + 65

Which function is equivalent to
y = x² - 6x + 10?

• y = (x + 3)² - 1
• y = (x - 3)² + 1
• y = (x + 6)² - 10
• y = (x - 6)² + 10

Convert f(x) = 3x²+ 6x - 5 to vertex form.

• f(x) = 3(x + 1)² - 8

• f(x) = 3(x - 1) ² - 8

• f(x) = 3(x + 2)² - 8

• f(x) = 3(x - 2)² - 8

Convert to vertex form.

• y=-(x-5)² + 21
• y=-(x+5)² + 21
• y=-(x+10)² + 21
• y=-(x-10)² + 21

Convert to vertex form.

• y=2(x+3)² - 9
• y=2(x-3)² - 9
• y=2(x+6)² - 9
• y=2(x-6)² - 9

 $\left(2x-1\right)\left(3x+4\right)$  

Find the equivalent expression.  

•  $6x^2-5x-4$  

•  $6x^2+5x-4$  

•  $6x+11x+4$  

•  $6x+5x-4$  

•  $6x^2-11x-4$  

Change the quadratic equation from factored form to standard form:

(x + 6)(x +5)

• x² + 6x + 5

• x² +11x + 30

• x²+ 30x+11

• x² + x - 6

Change the quadratic equation from factored form to standard form:

(x - 3) ( x + 3)

• x² + 9

• x² +1x + 6

• x² - 9

• x² + 2x - 6