Question

Доведіть тотожність: 2 (4x+3) -(4x-5)(4x+5)-24x=34

Answer 1

(4x-5)(4x+5)=16x-25
2 (4x+3)=8x+6-24x=34

Answer 2

4x+3-(16x^2-25)-24x=34
3-20x-16x^2+25=34
-20x-16x^2=34-28
-4x(5+4x)=6, -4x=6, x1= -6/4, x1=1.5, 5+4x=6, 4x=1, x2=1/4