Showing posts with label Education. Show all posts
Showing posts with label Education. Show all posts

Thursday, August 2, 2018

Thursday, July 5, 2018

Algebra

July 05, 2018
29. Algebra Identities: (i) (a + b)2 + (a – b)2 = 2 (a2 + b2) (ii) (a + b)2 – (a – b)2 = 4ab (iii) a3 + b3 = (a + b) (a2 – ab + b2) (iv) ...

Number System

July 05, 2018
1. Method to multiply 2-digit number.     (i) AB × CD = AC / AD + BC / BD          35 × 47 = 12 / 21 + 20 / 35 = 12 / 41 / 35 = 1645    ...