Instead of doing it for you, here is one EXACTLY like the
one you have. Only the numbers are changed. Do yours step
by step as I have done this one. If you have any trouble
just tell me in the email form below and I'll get back to
you by email.
Factor 4 out of the first two terms
To complete the square:
1. Begin with the coefficient of x. That's -4
2. Multiply it by 1/2. That's (-4)(1/2) = -2
3. Square it. That's (-2)2 = +4
4. Add it and subtract it inside the parentheses: We put in +4-4
We factor the first three terms inside the parentheses:
The two factors are the same so we write the product
as (x-2)2.
Now we remove the outer parentheses, by distributing,
leaving the (x-2)2 intact:
Combine the numbers -16 and +25 as +9
<--answer
Now do yours using this as a step by step guide.
Edwin
