Question

find the value of m so that the equation x^2+10x+21=0 & x^2+9x+m=0 may have a common roots. Find also the equation formed by other roots

Answer 1

i have find the value of m.m=18
but Find also the equation formed by other roots

Answer 2

So, what are the roots of equation x^2+10x+21

Answer 3

its -7 & -3
and for x^2+9x+m=0
= -3 or -3/2

Answer 4

Now, the other two roots are -7 and -3/2

Answer 5

no -3 or -3/2

Answer 6

U need to make such a equation whose roots are -7 and -3/2

Answer 7

I mean the other roots (roots that are not common)

Answer 8

Can u make such a equation?

Answer 9

no