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Which equation completes the square to create an equivalent equation in the form of (x-p)^2=q x^2+4x+1=0 Show your work here (x+2)^2=3 (x+4)^2=1 (x+2)^2=8 (x-8)^2=9

Question

Which equation completes the square to create an equivalent equation in the form of (x-p)^2=q x^2+4x+1=0 Show your work here (x+2)^2=3 (x+4)^2=1 (x+2)^2=8 (x-8)^2=9

Which equation completes the square to create an equivalent equation in
the form of (x-p)^2=q
x^2+4x+1=0
Show your work here
(x+2)^2=3
(x+4)^2=1
(x+2)^2=8
(x-8)^2=9

Solution

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FilbertElite · Tutor for 8 years

Answer

### $(x+2)^2 = 3$

Explain

## Step 1: Rewrite the equation<br />### Move the constant term to the right side of the equation.<br />$x^2 + 4x = -1$<br /><br />## Step 2: Complete the square<br />### Take half of the coefficient of the x term (which is 4), square it $(4/2)^2 = 2^2 = 4$, and add it to both sides of the equation.<br />$x^2 + 4x + 4 = -1 + 4$<br />$x^2 + 4x + 4 = 3$<br /><br />## Step 3: Factor the left side<br />### The left side is now a perfect square trinomial and can be factored as $(x+2)^2$.<br />$(x+2)^2 = 3$
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