Is there a name for the equation [math]ab = (a + 1)(b - 1) + 1[/math]? - Quora
Why is (1/a)*(1/b) = (1/ab)? - Quora
Heron's formula - Wikipedia
a+b=3 y ab=1 halla a2-b2 - YouTube
Solve for x: 1/(a + b + x) = 1/a + 1/b + 1/x [with Video] - Teachoo
Trigonometry
Example 14 - Verify (AB)-1 = B-1 A-1, if A = [2 3 1 -4] - Examples
Derive the formula A = 1/2 ab sin(C) for the area of a triangle by drawing an auxiliary line from a vertex perpendicular to the opposite side - Common Core: High School - Geometry
Solved Using the properties of logarithms, decide whether | Chegg.com