Asked by samarth

if x=1+under root 2+under root 3 prove that x power 4-4 x cubed-4x squared+16x-8=0

Answers

Answered by Steve
How about some actual math notation?

is it

x=1+√2+√3
and
x^4-4x^3-4x^2+16x-8 = 0?

I don't see any useful tricks here. Just start expanding the powers.
x^4 = 80 + 48√2 + 40√3 + 32√6
Expand the others and then things will cancel out.
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