(-7/2x+3)(4x^2-9/13x)

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Solution for (-7/2x+3)(4x^2-9/13x) equation: 


x in (-oo:+oo)

((-7/2)*x+3)*(4*x^2-((9/13)*x)) = 0

((-7/2)*x+3)*(4*x^2+(-9/13)*x) = 0

(3-7/2*x)*(4*x^2-9/13*x) = 0

4*x^2-9/13*x = 0

x*(4*x-9/13) = 0

4*x-9/13 = 0 // + 9/13

4*x = 9/13 // : 4

x = 9/13/4

x = 9/52

x*(x-9/52) = 0

x*(3-7/2*x)*(x-9/52) = 0

( 3-7/2*x )

3-7/2*x = 0 // - 3

-7/2*x = -3 // : -7/2

x = -3/(-7/2)

x = 6/7

( x-9/52 )

x-9/52 = 0 // + 9/52

x = 9/52

( x )

x = 0

x in { 6/7, 9/52, 0 }

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