idiothoney idiothoney 26-08-2021 Mathematics contestada Solve Each Equation by Graphing. 4. x^2-10+21=0 5. 4x^2+4x+1=0 6. x^2+x-6=0 7. x^2+2x+3=0 8. -x^2-6x-9=0 9. x^2-6x+5=0 10. x^2+2x+3=0 11. x^2-3x-10=0 12. -x^2-8x-16=0