Asked by madawna
x= radical x+13+7 is what approx. the solution to th nearest hundredth.
Answers
Answered by
Henry
X = sqrt(x+13+7).
Square both sides:
x^2 = x+13+7
x^2 - x - 20 = 0
C = -20 = -5*4.
(x-5)(x+4) = 0.
x-5 = 0
x = 5.
x+4 = 0
x = -4.
Solution set: X = 5, and X = -4.
Square both sides:
x^2 = x+13+7
x^2 - x - 20 = 0
C = -20 = -5*4.
(x-5)(x+4) = 0.
x-5 = 0
x = 5.
x+4 = 0
x = -4.
Solution set: X = 5, and X = -4.
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