Question

For what values of XER the
following Expressions
are positive?
x²-5x-14​

Answer 1

Answer:

x

2

−5x−14>0

x

2

−7x+2x−14>0

(x−7)(x+2)>0

⇒x<−2 or x>7

Hence for x∈(−∞,−2)∪(2,∞), the expression x

2

−5x−14 is positive.

Answer 2

Answer:

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