10. Work backwards to write a quadratic equation that will have solutions of x = 3 and x = -7. 11. Work backwards to write a quadratic equation that will have solutions of x = 12 and x = 2.

Please Help

12. Work backwards to write a quadratic equation that will have solutions of x = -1/2 and x = 4. (Your equation must only have integer coefficients, meaning no fractions or decimals.)

13. Write a quadratic equation that will have a solution of only x = 0. Note: this means there will be a double solution of x = 0.

14. Write a quadratic equation that cannot be factored.

15. The product of two consecutive positive integers is 72. Find the integers.

16. The product of two consecutive negative integers is 10506. Write a quadratic equation that you could solve to find the integers.

17. Write a quadratic equation to find two consecutive odd natural numbers whose product is 63. Then find the numbers.