Найдите корни уравнения 49-4х²=0

4x^2=49x^2 = 49/4х = 3,5 и х = -3,5

49 - 4x^2 = 07^2 - (2x)^2 = 0( 7 - 2x)(7 + 2x) = 07 - 2x = 0- 2x = - 72x = 7x = 3,57 + 2x = 02x = - 7x = - 3,5Ответ: x1 = 3,5, x2 = - 3,5.