Question

Решите подробно плиз очень срочно

Answer 1

$frac14x^2 - 4 = 0\a^2 - b^2 = (a-b)(a+b)\a^2 = frac14x^2 => a = frac12x\b^2 = 4 => b = 2\(frac12x - 2)(frac12x + 2) = 0\frac12x -2 =0; frac12 x = 2; x= 4;\frac12x + 2=0; frac12x = -2; x = -4\x = 4; x = -4$