Equations and Inequalities

Question 1

Quadratic Formula=

Answer 1

If ax^2 + bx + c= 0 then:

x= -b±√b^2-4ac/2a

Question 2

Completing the Square=

Answer 2

x^2 + 7x + 10 = 0:

(x+5)(x-2):

x= -5 or 2

Question 3

Simultaneous Equations

Answer 3

A set of equations that have the same solution

Question 4

Using Elimination

Answer 4

Equation 2 - Equation 1:

x + 2y = 17, -, 3x + 2y = 19:

2-1: 2x=2 -> x=1

1+ 2y = 17 -> y= 8