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Express in the form
MATHEMATICS · Subjective · GCSE · Mathematics · Number · Number
Problem
Express
61
−
28
3
\sqrt{61 - 28\sqrt{3}}
61
−
28
3
in the form
a
+
b
c
a + b\sqrt{c}
a
+
b
c
, where
a
a
a
,
b
b
b
, and
c
c
c
are integers.
Related theory
Algebraic Identities
Polynomials
Real Number System
Surds and rationalisation
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