x2+4x−21=?(a) (x−7)(x+3)(b) (x+7)(x−3)(c) (x−7)(x−3)(d) (x+7 – InterviewSolution

1.	x2+4x−21=?(a) (x−7)(x+3)(b) (x+7)(x−3)(c) (x−7)(x−3)(d) (x+7)(x+3)
Answer» $x^{2} + 4 x - 21 = ? (a) (x - 7) (x + 3) (b) (x + 7) (x - 3) (c) (x - 7) (x - 3) (d) (x + 7) (x + 3)$

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