9x²-4=0 0,64-y²=0 4x²-2x=0 5x²-20=0 z²-7=0 3x-2x²=0 y²-[latex] \frac {16}{49} [/latex]=0 11-z²=0 -5x²+75=0 0,2x-5x²=0

1. x=[latex] \frac{2}{3} [/latex]; -[latex] \frac{2}{3} [/latex] 2. х=-0.8; 0.8 3. у= 0; [latex] \frac{1}{2} [/latex] 4. х= 2; -2 5. z= -[latex] \sqrt{7} [/latex]; [latex] \sqrt{7} [/latex] 6. х= 0; [latex] \frac{3}{2} [/latex] 7. у= [latex] \frac{4}{7} [/latex]; - [latex] \frac{4}{7} [/latex] 8. z=-[latex] \sqrt{11};\sqrt{11} [/latex] 9. х=-[latex] \sqrt{15} ;\sqrt{15} [/latex] 10. х=0;[latex] \frac{1}{25} [/latex]