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16-05-2018
Mathematics

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A) Simplify the expression a + a/a-1
b) Find its value at a = 0.1. In response, write down the number obtained.

A Simplify the expression a aa1 b Find its value at a 01 In response write down the number obtained class=

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16-05-2018

a + a / (a - 1)

= a(a - 1) + a
-----------------
(a - 1)

= a^2 - a + a
---------------
a - 1

= a^2
-------- Answer
a - 1

When a = 0.1 it = (0.1)^1 / 0.1 - 1 = -0.0111 or -1/90 as a fraction

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