the number of polynomial having as - 2and 5is _?
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Let a=-2
&b=5
x2-(a+b)x+ab
= x2-(-2+5)x+(-2×5)
x2-3x-10
&b=5
x2-(a+b)x+ab
= x2-(-2+5)x+(-2×5)
x2-3x-10
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