Solve each equation. (x + 3)(x - 3) = 16 - 2x2
Question
Updated 3/17/2014 7:28:53 AM
This conversation has been flagged as incorrect.
Flagged by yeswey [3/17/2014 7:26:30 AM]
Original conversation
User: Solve each equation. (x + 3)(x - 3) = 16 - 2x2

Weegy: x - 5 = 10

x = 10 + 5

x = 15

Question
Updated 3/17/2014 7:28:53 AM
This conversation has been flagged as incorrect.
Flagged by yeswey [3/17/2014 7:26:30 AM]
Rating
3
(x + 3)(x - 3) = 16 - 2x^2
x^2 - 9 = 16 - 2x^2
3x^2 = 25
x^2 = 25/3
x = +/- sqrt(25/3)
= +/- 5/sqrt3
= +/-(5sqrt3)/3

Confirmed by andrewpallarca [3/17/2014 7:32:18 AM]

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