Mathematics, 15.07.2019 13:00 dbenjamintheflash5
What are the solutions of the equation (x + 2)2 + 12(x + 2) – 14 = 0? use u substitution and the quadratic formula to solve. a. x= -8+5 square root 2b) x=-6+5 square root 2c) x= -4+5 square root 2d) x= -2+5 square root 2?
Answers: 1
. Fitting this into the quadratic formula looks like this: 
. Simplifying a bit gives us 
. Simplifying that in terms of the radical gives us 
. Reducing that numerator by the 2 in the denominator gives us 
. If u = x + 2, then we make that substitution now to solve for x: 
and 
; 
and 
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What are the solutions of the equation (x + 2)2 + 12(x + 2) – 14 = 0? use u substitution and the qu...
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