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25x⁴+25=246x² 25x²+25/x²=246 x²+1/x²=246/25 (x-1/x)²=196/25 x- | Algebra Quint

25x⁴+25=246x²
25x²+25/x²=246
x²+1/x²=246/25
(x-1/x)²=196/25
x-1/x=14/5
5x²-5=14x
5x²-14x=5
a/q...

5(x-1.4)²=5x²-14x+9.8
=5+9.8=14.8