Lemma
MediumExponentials & logarithms
#1140 · Algebra · Exponentials & logarithms

Rationalising Factor for Fifth and Third Roots

Find a factor which will rationalise .

~10 minAnswer checked instantlysurdsrationalisation

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. VIII. Surds and Imaginary Quantities, Examples VIII.a, No. 8

Stuck? A gentle nudge
Something off?
Workspace
Your answer
Loading the math keyboard…

Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.

Checked against the answer in H. S. Hall & S. R. Knight, Higher Algebra (1891).