Equations

Question 1

Difference of squares

Answer 1

x^2 - y^2 = (x + y)(x - y)

Question 2

Difference of cubes

Answer 2

x^3 - y^3 = (x - y)(x^2 + xy + y^2)

Question 3

Sum of cubes

Answer 3

x^3 + y^3 = (x + y)(x^2 - xy + y^2)

Question 4

Perfect square trinomial, addition between first 2 terms

Answer 4

x^2 + 2xy +y^2 = (x + y)^2

Question 5

Perfect square trinomial, subtraction between first 2 terms

Answer 5

x^2 - 2xy +y^2 = (x - y)^2

Question 6

Quadratic equation (standard form)

Answer 6

ax^2 + bx + c = 0

Question 7

Definition of quadratic equation

Answer 7

A quadratic equation contains a squared term and no terms of higher degree.