Quadratics! :)

Quadratic Formula

100

What is the standard form of a quadratic equation?

ax^2+bx+c=0

200

What is the Quadratic Formula?

x=(-b±√(b^2-4ac))/2a

300

What is the first step for solving an equation using the quadratic formula?

Make sure the equation is in standard form, which means it should equal 0

400

x^2 + 11x - 42 = 0

x = 3 or -14

500

3r^2 + 8r - 91 = 0 ?

r = -7 or 13/3

Factoring

100

x^2 - 49

(X+7)(x-7)

200

x^2 + 7x + 6

(x + 6)(x + 1)

300

k^2 + 5k - 24

 (k + 8)(k - 3)

400

h^2 - 9h + 18 = 0?

h= 6 or 3

500

a^2 + 3a - 22 = -4 ?

a = 3 or -6

Vocabulary

100

Name two other terms for the solutions to a quadratic equation

Zeros or roots or x-intercepts

200

x equals negative b, plus or minus the square root of b squared minus 4ac all over 2a is called......

The quadratic formula

300

The coefficients used in the quadratic formula are

A, B, C

400

A polynomial consisting of three terms

A trinomial

500

f(x)= a(x-h)2 +k

Vertex form

Completeing the Square

100

n^2 + 14n - 51 = 0 ?

n = 3 or -17

200

p^2 - 14p -101 = -6 ?

p = 19 or -5

300

x^2-6x=-2

x=3 +/-√7

400

x^2-8x+13=0

x=4+/-√3

500

x^2-6x-15=0

x=3+/-2√6