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Find the real solutions of the equation.
The long square root is covering x^2-x-4=x+5
What is the solution set?
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Notice: It is much better to use parentheses than the word descriptions in math.
It is proved more than 2000 years history.
Parentheses are free !!
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= x+5.
Square both sides. You will get
= .
Simplify
= ,
0 = 11x + 29,
11x = - 29,
x = .
Can you check it?
I better will illustrate it graphically.
Plots y = (red) and y = x+5 (green).
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