Verify whether x = -2 is root of polynomial x² + 10x -10

1.	Verify whether x = -2 is root of polynomial x² + 10x -10
Answer» x² + 10x -10= (-2)2 + 10 (-2) - 10= 4 - 20 - 10= 4 - 30= - 26Hence\xa0x = -2 is not root of polynomial x² + 10x -10

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