how from a+b the whole square =a square+b square+2ab 2ab+2ab has obtained a+b the whole square=a b the whole square+ 4ab
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
Home Tutor - Algebra formulas: a² – b² = (a-b)(a+b) (a+b)² = a² + 2ab + b² ( a-b)² = a² – 2ab + b² | Facebook
![PPT - ( a + b ) 2 = a 2 + 2ab + b 2 ( a – b ) 2 = a 2 - 2ab + b 2 a 2 – b 2 = ( a + b)( a – b ) PowerPoint Presentation - ID:5597409 PPT - ( a + b ) 2 = a 2 + 2ab + b 2 ( a – b ) 2 = a 2 - 2ab + b 2 a 2 – b 2 = ( a + b)( a – b ) PowerPoint Presentation - ID:5597409](https://image3.slideserve.com/5597409/a-b-2-a-2-2ab-b-2-a-b-2-a-2-2ab-b-2-a-2-b-2-a-b-a-b-l.jpg)