for what values of X the expression x square - 5 x minus 14 is positive
Answers
Answered by
5
X^2-5X-14
X^2-7X+2X-14
X(X-7)+2(X-7)
(X+2)(X-7)
X= -2 & X= 7
if it seems to be helpful mark my answer as brainliest.
X^2-7X+2X-14
X(X-7)+2(X-7)
(X+2)(X-7)
X= -2 & X= 7
if it seems to be helpful mark my answer as brainliest.
Answered by
3
x^2-5x-14
by factorisation method
x^2-(7-2)x-14
x^2-7x+2x-14
x(x-7)+2(x-7)
(x-7)(x+2)
therefore,putting (x-7)=0
we get,
x-7=0
x=7
and similarly x=-2
hence proved.
by factorisation method
x^2-(7-2)x-14
x^2-7x+2x-14
x(x-7)+2(x-7)
(x-7)(x+2)
therefore,putting (x-7)=0
we get,
x-7=0
x=7
and similarly x=-2
hence proved.
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