Theo started to solve the quadratic equation (x 2) 2 - 9 = - 5. he added 9 to both sides and the resulting equation was (x 2) 2 = 4. next, he took the square root of each side. which was the resulting equation of that step? x 2 = ±4 x 2 = ±2 x 2 = ±8 x 2 = ±16

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18 January, 05:14

+5

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Paul Hurley · Answer 1

(x^2) ^2 = 4

take sq rt of both sides

x^2 = sq rt 4

x^2 = ( + - ) 2 ... so it's the second answer choice