Question

find the nonpermissible for a in this expression a^2/2a+6

Answer 1

Answer:

The value not permissible for a is -3.

Step-by-step explanation:

Considering real numbers, the expression is undefined for any value a for which the denominator expression is zero.

$\frac{a^2}{2a+6}, \,\,\,2a+6\neq 0\implies a\neq -3$

The expression is valid for all real numbers, except -3.

Answer 2

Answer:

a≠-3

Step-by-step explanation:

We cannot divide by zero, so the denominator cannot be zero

2a+6≠ 0

Subtract 6 from each side

2a+6-6≠ 0-6

2a ≠-6

Divide each side by 2

2a/2 ≠-6/2

a≠-3