Solving quadratics

Which of the following equations matches standard form of a quadratic?

• ax + by = c
• y = a(x - h)² + k
• y = ax² + bx + c
• y = mx + b

What are the roots of the function?

• x = 4, -1

• (-4, 1)

• x = -4, 1

• (4, 0) (-1, 0)

What is another word for zeros?

• y-intercepts
• roots
• vertex
• axis of symmetry

• -3, 4
• 3, 4
• -4, -3
• -3

Solve
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Convert x²-9x+20 to factored form and solve.

• (x-10)(x+2); x=-2, 10
• (x+4)(x+5); x=-5, -4
• (x-4)(x-5); x=4, 5
• Not factorable

Solve
a² + 2a - 24 = 0

• a = {-6, 4}

• a = {6, -4}

• a = {12, -2}

• a = {8, -3}

What are the zeros?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

3x² = 12

• ± 2
• 2
• ± √12
• ± 4

x² + 4 = 68

• ± 8
• ± √8
• 8
• ± 64