What completes this expression to make it a perfect square trinomial? x2 + 4x + a 2 b 4 c 8 d 16

Option B. 4

Step-by-step explanation:

The given expression is x² + 4x +

We have to find a number which can be added in the expression to make it a perfect square trinomial.

x² + 2(2x) + 2²

= (x + 2)²

Therefore, if we add 4 in the given expression it becomes a perfect trinomial.

Option B is the correct option.

step-by-step explanation:

try remembering the steps

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.