Lecture 1

Question 0

x^3 + y^3 = ?

Answer 0

(x + y)•(x^2 - xy + y^2)

Question 1

x^2 - y^2 = ?

Answer 1

(x + y)•(x - y)

Question 2

x^3 - y^3 = ?

Answer 2

(x - y)•(x^2 + xy + y^2)

Question 3

x^2 + (a + b)x + ab = ?

Answer 3

(x + a)•(x + b)

Question 4

acx^2 + (bc + ad)x + bd = ?

Answer 4

(ax + b)•(cx + d)

Question 5

x^2 + 2xy + y^2 = ?

Answer 5

(x + y)^2

Question 6

x^2 - 2xy + y^2 = ?

Answer 6

(x - y)^2