Question

If you know how to complete a square please help!

In the function f(x) = 5(x^2 - 4x __) + 15, what number belongs in the blank to complete the square?

Answer 1

x2−4x+?

(b/2)
(-4/2)^2
= +4
x^2-4x+4
The answer would be 4.

Answer 2

Thank you so much!

Answer 3

ur welcome medal plz?

Answer 4

thx

Answer 5

@clanger555 can you prove it your answer please that is right ?

Answer 6

sure

Answer 7

thank you in advance

Answer 8

x2−4x+?

(b/2)
(-4/2)^2
= +4
x^2-4x+4
The answer would be 4.

Answer 9

step by step please - i dont understand it so

Answer 10

f(x) = 5(x^2 - 4x __) + 15

how you make from these a square perfect ?

Answer 11

@clanger555 Could you help with another one?

Answer 12

just bc. this is the exercise ,the question

Answer 13

Thank you so much!