Question

解方程组 4x-3y-6=0 x^2+y^2-18x+45=0

Answer 1

3y=4x-6;

y=(4x-6)/3;

x²+(4x-6)²/9-18x+45=0;

9x²+16x²-48x+36-162x+405=0;

25x²-210x+441=0;

(5x-21)²=0;

x=21/5;

y=18/5;