Question

Find the quadratic equation of roots 3 and 4, -2 and 7, -9 and 1.

Answer 1

3,4
(x-3)(x-4)=0
x^2-3x-4x+12=0
x^2-7x+12=0
If a, b are roots of a quadratic eqn
(x-a)(x-b)=0
x^2-ax-bx+ab=0
x^2-(a+b)x+ab=0
See if u cn do the rest two.

Answer 2

Thanks

Answer 3

yw