x^1/2(x^2-9x-90)=0

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Solution for x^1/2(x^2-9x-90)=0 equation: 


x in (-oo:+oo)

((x^1)/2)*(x^2-(9*x)-90) <= 0

(x/2)*(x^2-9*x-90) <= 0

1/2*x*(x^2-9*x-90) <= 0

x^2-9*x-90 = 0

x^2-9*x-90 = 0

DELTA = (-9)^2-(-90*1*4)

DELTA = 441

DELTA > 0

x = (441^(1/2)+9)/(1*2) or x = (9-441^(1/2))/(1*2)

x = 15 or x = -6

(x+6)*(x-15) = 0

1/2*x*(x+6)*(x-15) <= 0

( 1/2*x )

1/2*x+0 <= 0 // - 0

1/2*x <= 0 // : 1/2

x <= 0/1/2

x <= 0

( x+6 )

x+6 <= 0 // - 6

x <= -6

( x-15 )

x-15 <= 0 // + 15

x <= 15

	(-oo:-6)	(-6:0)	(0:15)	(15:+oo)
1/2*x	-	-	+	+
x+6	-	+	+	+
x-15	-	-	-	+


x in (-oo:-6> U <0:15>

(-oo:-6> U <0:15>

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