a)
.
2x-1x+3:xx+4=2x-1x+3·x+4x=2x-1x+4x+3x=2x2+8x-x-4x2+3x=2x2+7x-4x2+3x" role="presentation" style="position:relative" tabindex="0">1x+3⋅x+4x=
2x-1x+3:xx+4=2x-1x+3·x+4x=2x-1x+4x+3x=2x2+8x-x-4x2+3x=2x2+7x-4x2+3x" role="presentation" style="position:relative" tabindex="0">b)
.
c)
.
d2x-1x+3:xx+4=2x-1x+3·x+4x=2x-1x+4x+3x=2x2+8x-x-4x2+3x=2x2+7x-4x2+3x" role="presentation" style="position:relative" tabindex="0">)
.
e)
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