1.

The mass of an electron is 9.1*10^-28 grams. What is the mass of 4*10^8 electron in Maths

Answer»

ANSWER:

Basic Algebra Identities

(a + b)2 = a2 + b2 + 2AB

(a – b)2 = a2 + b2 – 2ab

a2 – b2 = (a + b)(a – b)

a2 + b2 = (a + b)2 – 2ab = (a – b)2 + 2ab

A3 + b3 = (a + b)(a2 – ab + b2)

a3 – b3 = (a – b)(a2 + ab + b2)

(a + b)3 = a3 + 3AB(a + b) + b3

(a – b)3 = a3 – 3ab(a – b) – b3


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