Question

4. Show that x= -2 is a solution of x' +6x+8 =0​

Answer 1

Step-by-step explanation:

here is given x=-2

Put the value of x in this equation

x^2 +6x+8 =0

2^2+6×-2+8=0

4-12+8=0

12-12=0

0=0 proved