Question

determine by substitution, if : -3 is the root of 2(x+4)=14

Answer 1

on substituting the value of x in given equation
2(x+4)
2(-3+4)
2(1)
2 which is not equal to 14
hence x=-3 is not root of given equation

Answer 2

Hi ,

Substitute x = -3 in given equation,

2(x + 4) = 14

2 ( - 3 + 4 ) = 14

2 × 1 = 14

2 = 14 ( false )

Therefore ,

x = -3 is not a solution of the

equation.

I hope this helps you.

:)