Question

Решите уравнение (6х + 5)² - 4х(3+ 9х) =49

Answer 1

(6x + 5)^2 - 4x(3 + 9x) = 49
36x^2 + 60x + 25 - 12x - 36x^2 = 49
48x = 24
x = 24/48
x = 1/2

Answer 2

36х²+60x+25-12x-36x²=49
48x+25=49
48x=49-25
48x=24
x=0.5