Question

найдите корни уравнения: (3x+4)²+(5x-1)²=38+x

Answer 1

9x^2+24x+16+25x^2-10x+1=38+x
34x^2+14x+17=38+x
34x^2+13x-21=0
D=169+2856=3025
x(1)=-13+55/68=21/34
x(2)=-13-55/68=-1