Day 9 Quizizz

Review: Find the vertex of

f(x) = -x² - 4x + 12.

• (-2, 16)

• (2, 0)

• (2, 4)

• (-2, 4)

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Solve  $x^2-6x+10=0$ by the Quadratic Formula

•  $3\pm2i$  

•  $-3\pm4i$  

•  $3\pm i$  

•  $6\pm8i$  

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• x = 5 and x = 12

• 
• 
• 

What is the standard form for a Quadratic?

• ax²+ bx = - c
• x = -b ± √(b²-4ac) / 2a
• ax² + bx + c
• y = mx + b

What are the zeros of the quadratic?

• -2, 1

• 1, 2

• -1,2

• 0,-4

If the zeros of a quadratic are 5 and -2, which would be the correct quadratic equation?

• y = x² + 3x - 10

• y = x² - 3x - 10

• y = x² + 2x - 5

• y = x² + 5x - 2

If  $\pm6i$  are the zeros of a quadratic equation, which of the following is the correct equation? 

•  $y\ =x^2+12$  

•  $y\ =x^2-12$  

•  $y\ =x^2+36$  

•  $y\ =x^2-36$  

Review: Choose the correct answer for the operation pictured.

• 7-13i

• 7-i

• 1-13i

• 1-i

Review: Factor the following completely (Remember GCF)

2k² - 14k - 60

• 2(k-10)(k-3)

• Not Factorable

• (k-5)(k+9)

• 2(k-10)(k+3)