1)x^2-10x+25-x+3=0
x^2-11x+28=0
D=121-112=9
x1=11+3/2=7
x2=11-3/2=4
2)49-x^2+3x^2-11x-34=0
2x^2-11x+15=0
D=121-120=1
x1=11+1/4=3
x2=11-1/4=10/4=2,5
3)16+24x+9x^2-8-2x^2-39=0
7x^2-15x+8=0
D=225-224=1
x=15+1/2=16/14
x=15-1/14=1
1)x^2-10x+25-x+3=0
x^2-11x+28=0
D=121-112=9
x1=11+3/2=7
x2=11-3/2=4
2)49-x^2+3x^2-11x-34=0
2x^2-11x+15=0
D=121-120=1
x1=11+1/4=3
x2=11-1/4=10/4=2,5
3)16+24x+9x^2-8-2x^2-39=0
7x^2-15x+8=0
D=225-224=1
x=15+1/2=16/14
x=15-1/14=1