Question

Obtain the quadratic equation if roots are 3 and -10 
​

Answer 1

Answer:

x²+7x-30=0

Step-by-step explanation:

roots = 3 and -10 say a and b

therefore sum of roots (a+b) : 3+ (-10) = -7

-(a+b) = 7

product of roots = 3(-10) = -30

(ab) = 30

we know that a quad eq is x² -(a+b)x + ab = 0

x² + 7x - 30 = 0