Factorise: x2 - 10x + 21 – InterviewSolution

1.

Factorise: x2 - 10x + 21

Answer»

X^2 - 10 x + 21 =( x -7) ( x-3)

x - 7 = 0 , x = 7

x - 3 = 0,. x = 3

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