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Przekształcam lewą stronę równania:
(x+2²⁰⁰⁴)²-(x-2²⁰⁰⁴)²=
=x²+ x×2×2²⁰⁰⁴ +(2²⁰⁰⁴)² - x²+ x×2×2²⁰⁰⁴ -(2²⁰⁰⁴)²=
=x²+ x×2²⁰⁰⁵ +(2²⁰⁰⁴)² - x²+ x×2²⁰⁰⁵ -(2²⁰⁰⁴)²=
=x²-x² +(2²⁰⁰⁴)²-(2²⁰⁰⁴)² + 2×x×2²⁰⁰⁵=
=x×2²⁰⁰⁶
A zatem:
x×2²⁰⁰⁶=2²⁰⁰⁶
x=1