What value for c will make the expression a perfect square trinomial? x2 – 7x + c

Final answer is .

Step-by-step explanation:

Given expression is .

Now we need to find about what value for c will make the given expression , a perfect square trinominal.

Coefficient of middle term that contains x, in -7.

Take half of that so we get .

Then take square of the half value.

We get .

We add the square value to make perfect square trinomial.

Hence final answer is .

D. .

Step-by-step explanation:

We have been given a trinomial . We are asked to find the value of c, which will make the expression a perfect square trinomial.

We know that a perfect trinomial is in form .

We will use complete the square process to solve for c.

To complete a square, we need to add square of half the coefficient of x term. We can see that coefficient of x is -7, so the value of c would be:

.

Therefore, the value of c required to make the given expression a perfect trinomial is and option D is the correct choice.

answer: sine

step-by-step explanation: