Quadratics

Find the zeros of this quadratic.

• b=4/5, b=3
• b=4, b=-3
• b=1/5, b=3
• b=4/5, b=-3

Solve by Factoring:

• -2, 4
• -8
• ±8
• No real solution

What is another word for zeros?

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

What are the roots of the function?

• {x|x = 4, -1}

• (-4, 1)

• {x|x = -4, 1}

• (4, 0)

What are the x-intercept/s of the function?

• {x|x = 3}

• {x|x =-3,3}

• (3, 0)

• (-3, 0)

True or false:
The solutions, roots, x-intercepts, and zeros of a quadratic equation are all the same thing.

• True
• False, because the solution and root are the same but the x-intercept and zero are different
• False, because the x-intercept and root are the same but the zero and solution are different
• False, they are all different

What are the factors AND solutions of x² + 2x – 3 = 0

• (x - 2)(x + 1); x=2, x=-1
• (x + 1)(x - 3); x=-1, x=3
• (x + 2)(x - 1); x=-2, x=1
• (x - 1)(x + 3); x=1, x=-3

Find the solutions to the quadratic equation.

• -4, 2
• -2, 4
• -16
• -4

Solve by factoring:

• ±81
• ±9
• ±3
• No real solution

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.