Question

решите уравнение (3х+4)( во второй степени)-16=0

Answer 1

(3x + 4)^2 - 16 = 0
(3x + 4)^2 - 4^2 = 0
(3x + 4 - 4) * (3x + 4 + 4) = 0 
3x * (3x + 8) = 0
x *( 3x + 8) =  0

x = 0;
3x + 8 = 0 ==> 3x = - 8 ==> x = - 8/3