Question

What number must you add to complete the square? x^2 + 16x = 3

Answer 1

6?

Answer 2

are you talking bout makin it a diff of squares

Answer 3

what number completes the square ?

Answer 4

64

Answer 5

because x^2+2*8*x+8^2-8^2=3
(x+8)^2-64=3

Answer 6

so is it 3 or 64?

Answer 7

64

Answer 8

What is (x+4)^2?

Answer 9

why you asking on my question?

Answer 10

x^2+2*4*x+16

Answer 11

It is the answer to your question....

Answer 12

it cant be.

Answer 13

boy?

Answer 14

Ok, (x+8)^2....

Answer 15

@estudier is right if can solve the simple one then you can solve your own problems.

Answer 16

Completing the square step by step
x^2 + 16x = 3

Step 1 Choose b=16 where b= coefficient of x in this case b=16
Step 2 add ( b/2)^2 to both sides , b/2 = 16/2 =8 so (b/2)^ = 64 this response your answer
X^2 + 16x + 64 = 64+ 3=67

(x+ 8)^2 = 67

So you must add (b/2)^2 = 64

Answer 17

\[x=\sqrt(67)-8 \]

Answer 18

The person were asking for a number need to for completing the square not for the solution of x ...