Question

Развяжите уравнение x²=4/9

Answer 1

4/9=(2/3)^2; x^2-(2/3)^2=0; (x-2/3)(x+2/3)=0; x-2/3=0 или x+2/3=0. x1=2/3, x2= -2/3. Ответ: x1=2/3, x2= - 2/3.

Answer 2

х²=4/9  х=√(4/9)=√4/√9=±2/±3=±2/3