Question

решите уравнение 14x^2-(2x-3)(7x+4)=14

Answer 1

14x²-(14x²+8x-21x-12)=14

14x²-14x²-8x+21x+12=14

13x=14-12

13x=2

X=2/13

Answer 2

Огромное спасибо

Answer 3

14x^2-(14x^2+8x-21x-12)=14
14x^2-14x^2-13x-12=14
-13x-12=14
-13x=2 l : (-13)
x = 2/13