7-(2x - 2) • (4x + 1) =2x • (5 - 4x)

Question

Теңдеуді қалай шешуге болады.

Answer 1

7 -(8x^2+2x-8x-2)= 10x-8x^2

7- 8x^2- 2x + 8x +2= 10x-8x ^2
 7- 8x^2- 2x + 8x +2-10x+8x^2 =0
-2x+8x+7-10=0
-2x+8x= 10-7
6x=3
x=3/6
x=0,5