Question

Which of the following equations has roots 3 and -10 ?​

Answer 1

Answer:Step-by-step explanation:

general quadratic equation

sum of roots = 3+5

8

product of roots = 3×5

15

x^2 -(sum of roots)x+product of roots = 0

x^2 - 8x+15 = 0

Step-by-step explanation:

Answer 2

Answer:

$\alpha + \beta = (3 - 10) = - 7$

$\alpha \beta = (3)( - 10) = - 30$

${x}^{2} - ( \alpha + \beta )x + \alpha \beta = 0$

${x}^{2} + 7x - 30 = 0$