алгебра помогите пожалуйста
2x^2-x-6a=x^2-ax+a-2
x^2-x+ax-7a+2=0
x^2-x(1-a)-(7a-2)=0
D=(1-a)^2+4*1*(7a-2)>0
1-2a+a^2+28a-8>0
a^2 +26a-7>0
(-oo;-4V11-3) U (4V11-3; oo)
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2x^2-x-6a=x^2-ax+a-2
x^2-x+ax-7a+2=0
x^2-x(1-a)-(7a-2)=0
D=(1-a)^2+4*1*(7a-2)>0
1-2a+a^2+28a-8>0
a^2 +26a-7>0
(-oo;-4V11-3) U (4V11-3; oo)