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va implor mult de tot​

Va Implor Mult De Tot class=

Răspuns :

( x/(x+4) - (2x+3)/(x-4) - (x^2+10x-8)/(16-x^2) ) : 10/(3x-12) =

( x/(x+4) - (2x+3)/(x-4) - (x^2+10x-8)/(4-x)(4+x) ) : 10/(3x-12) =

( x/(x+4) - (2x+3)/(x-4) + (x^2+10x-8)/(x-4)(x+4) ) : 10/(3x-12) =

( x(x-4) - (x-4)(2x+3) + x^2 + 10x - 8 )/(x-4)(x+4) : 10/(3x-12) =

( x^2 - 4x - (2x^2+3x+8x+12) + x^2 + 10x - 8 )/(x-4)(x+4) : 10/(3x-12) =

( x^2 - 4x - 2x^2 - 11x - 12 + x^2 + 10x - 8 )/(x-4)(x+4) : 10/(3x-12) =

( 0-5x-20 )/(x-4)(x+4) : 10/(3x-12) =

( -5(x+4) )/(x-4)(x+4) : 10/(3x-12) =

(-5)/(x-4) ori (3x-12)/10 =

(-5)/(x-4) ori ( 3(x-4) )/10 = -3/2