Question

show that X=-2 is a solution of 3 X(X) +13x +14=0

Answer 1

put here x =-2

and then 12-26+14=0
0=0


hence proved that x=-2 is a solution of it

Answer 2

[tex]3*x^{2}+13*x+14=0 [/tex]
3*x^{2}+6x+7x+14=0
3x(x+2)+7(x+2)=0

(3x+7)(x+2)=0
x=-7/3
x=-2