Simplification Questions for SSC
Simplification Questions for SSC
SIMPLIFICATION
BODMAS Rule: This Rule depicts the correct sequence in which the operations are to be executed, so as to find out the value of a given expression .
Here, B – Bracket
O – Of
D – Division
M – Multiplications
A – Addition
S – Subtractions
(a +b)2 = a2 + 2ab + b2
(a + b)(a – b) = (a2 – b2)
(a + b)2 = (a2 + b2 + 2ab)
(a – b)2 = (a2 + b2 – 2ab)
(a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca)
(a3 + b3) = (a + b)(a2 – ab + b2)
(a3 – b3) = (a – b)(a2 + ab + b2)
(a3 + b3 + c3 – 3abc) = (a + b + c)(a2 + b2 + c2 – ab – bc – ac)
When a + b + c = 0, then a3 + b3 + c3 = 3abc.
