IMPORTANT FORMULAS
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(a+b) (c+d)
ac+bc+ad+bd
(ax+b) (cx+d)
acx²+ (ad+bc)x+bd
(a+b+c)²
a²+b²+c²+2ab+2ac+2bc
(a+b) (a-b)
a²-b²
(a+b) (a²-ab+b²)
a³+b³
(a-b) (a²+ab+b²)
a³-b³
(a-b) (a³+a²b+ab²+b³)
a⁴-b⁴
(a+b) (a+b)
(a+b)²=a²+2ab+b²
(a+b) (a+b)(a+b)
(a+b)³= a³+ 3a²b+ 3ab²+b³
(a-b) (a-b)
(a-b)²= a²-2ab+b²
(a-b) (a-b) (a-b)
(a-b)³= a³-3a²b+3ab²-b³
(x+a) (x+b)
x²+(a+b)x+ab
