Question

At how many points the graph of polynomial
$f(x) = 3 - 2x -x {}^{2}$
Cut x axis

Answer 1

At two points it meets x axis

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Answer 2

-x^2 - 2x+3 = 0
-x^2 -3x+x +3=0
-x(X+3)+1(X+3) =0
(X+3)(-x+1) =0
(X+3) =0 OR (-X+1)=0
X= -3 OR -X = -1
X= -3 OR X = 1

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