Help will give medals!!!!!
In the function f(x) = 5(x2 − 4x + ____) + 15, what number belongs in the blank to complete the square?

- anonymous

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- jamiebookeater

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- Spid

Ok the answer is 5x2 is 10 and then minus 2-4 is 2 and then 4x+2 is 6

- anonymous

Can you show me how you got that?

- Spid

So 6 is in the box

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## More answers

- mathstudent55

When you have a quadratic with 1 as the coefficient of the x^2 term, to complete the square, take half of the x-term coefficient, and square it.

- Spid

Perfect math student

- Spid

Bravo

- mathstudent55

x^2 - 4x doe have a 1 as the coefficient of the x^2 term.
The coefficient of the x term is -4.
Take half of -4.
Then square that.

- anonymous

Okay, thanks guys!

- Spid

You have to do 2-4 equal 2

- mathstudent55

@noliveiraa
What did you get?

- Spid

Our medals please

- anonymous

so it would be -4?

- Spid

I got 2

- anonymous

and i gave the medals already @spid

- Spid

It's not spid it's spiderman

- mathstudent55

No.
The complete the square term is always positive.
Half of -4 is -2
-2 squared is 4.
The answer is 4.

- Spid

What ever man bye

- anonymous

Okay, so i am confused the answer 6 or not

- Spid

Yessss 😭😭

- Spid

I'm going to cry

- mathstudent55

6 is incorrect.
The complete the square term has to be a perfect square.
6 is not a perfect square, so 6 cannot possibly be correct.

- Spid

He don't know nothing

- Spid

Math man good luck

- anonymous

So then it is 4 because 4 is a perfect square, and i believe mathstudent55

- Spid

6

- Spid

I don't got it

- anonymous

Okay, thanks!

- mathstudent55

@noliveiraa Now you got it. 4 is the answer.

- Spid

No problem

- Spid

Hey my medal

- Spid

I'm reporting u

- anonymous

Why..

- anonymous

You gave me the wrong answer and did not help me

- anonymous

solve it

- Spid

I did to

- anonymous

Well 4 was right

- Spid

In wasting my time

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