5x²=6x+8 3x²+13x=2x²-x-49

Question

5x²=6x+8
3x²+13x=2x²-x-49

Answer 1

1) 5x^2=6x+8
5x^2-6x-8
Дискриминант:
a=5 b=-6 c=-8
D=36+160=корень196=14
x1=-6+14/10=8/10=0.8
x2=-6-14/10=-20/10=-2