I RLLY NEED HELP PLS!! Write each trinomial in the form (x+a)^2+b where a and b can be positive or negative.
x^2+4x+7

a = 2 and b = 3

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Explanation:

Let's expand out to get the following:

The x term here is 2ax

Compare this to the x term of and we see that

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The constant term of is the portion since it doesn't have the variable x attached to it.

Compare this with the 7 of which is also the constant.

Equate the two items, plug in a = 2 and solve for b.

Therefore,

not sure but it may be b, as i said i'm not sure.