Question

Решите Уравнение
25х²-7=0

Answer 1

25х²-7=0
25x² = 7
x² = $frac{7}{25}$
x=+-$sqrt{ frac{7}{25}}$
x=+-$frac{ sqrt{7}}{5}$

Answer 2

25х²-7=0
(5x)²-(√7)²=0
(5x-√7)(5x+√7)=0
x=√7/5
x=-√7/5