Solve a+1= square root b+1 for b
2 answers:
In order to get b our from under that square root sign, we have to square it. But if we square that side we also have to square the other side because this is an equation, after all, and we need to keep it in balance. If we square the right, we undo the square root, and the equation then looks like this: 
. We will FOIL out the left side to get 
. Now, to solve for b, we will subtract the 1 from both sides, leaving us with 
, the first of your choices above.
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Answer:
<h2>GRAPH III</h2>Step-by-step explanation:
Look at the picture.
We have
y = x² - 4 → move the graph of x² 4 units down (the vertex is (0, -4))
x + y + 2 = 0 <em>subtracy x and 2 from both sides</em>
y = -x - 2 → move the graph of -x 2 units down (the y-intercept os -2)
Only graph III and IV meets these conditions.
The solution is the points of intersection of the graphs.
Therefore your answer is GRAPH III
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