zeroes of quadratuc polybomial X²-2x-8
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2 and 4
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X²-2x-8
X² +2x-4x-8
( X²+2x)(-4x-8)
x(x+2) -4(x+2)
(x+2)(x-4) are factor
(x+2) = 0 (x-4) = 0
x = -2 x =4
x = -2,4 are zeros of the polynomial X²-2x-8
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