SOLUTION: identify the root to the nearest tenth. y=4-x^2 i came out with x=-2.1 and x=1.9, but i am not sure if this is correct.

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Question 7078: identify the root to the nearest tenth.
y=4-x^2
i came out with x=-2.1 and x=1.9, but i am not sure if this is correct.

Answer by glabow(165)   (Show Source): You can put this solution on YOUR website!
It is unclear what you are asking here.
If you mean to find what x makes y=0, which is the usual requirement for such equations (and referred to as zeroes of the equation) then,
is easily seen to be and .

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