Question

1. (a + b) x (a - b) = ???

2. tentukan hasil dari :

a.) (a + b)² = ???
b.) (a - b)² = ???
c.) (ax + b) x (cx + d) = ???

Answer 1

1. a²-b²
2 a.a²+2ab+b²
   b. a²-2ab+b²
c.ax²+axd+bx+bd