uprość wyrażenia ;
2(1,5+4x)=
-3(2-12x)=
½(6x-4)+8-2x=
opuść nawiasy zgodnie z prawami działań i zredukuj wyrazy podobne;
(2x-3)+(3x-4)-(6x-1)=
(x²-3x-5)+(2x²+4x+6)+(-x²-x+2)=
(-y²-5y)+(3y²+2y-4)-(7y²+4)=
(2,7x-3,2y+12,5)-(3.8x-2,2y+3,6)+(4,5+3)=
(½x+3y-5,5)-(¾x-6,5y+7.6)+(2¼x+⅖y-8,8)=
(x³+2y²-1,5)-(3x³-4y²-5)+(2x³-5y²-6,5)=]
pilne na jutro potrzebuje!!!!!!
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2(1,5+4x)=3+8x
-3(2-12x)=-6+36x
½(6x-4)+8-2x=3x-2+8-2x=x+6
(2x-3)+(3x-4)-(6x-1)=2x-3+3x-4-6x+1=-x-6
(x²-3x-5)+(2x²+4x+6)+(-x²-x+2)=x²-3x-5+2x²+4x+6+-x²-x+2=2x²+3
(-y²-5y)+(3y²+2y-4)-(7y²+4)=-y²-5y+3y²+2y-4-7y²-4=-5x²-3y-8
(2,7x-3,2y+12,5)-(3.8x-2,2y+3,6)+(4,5+3)=
=2,7x-3,2y+12,5-3.8x+2,2y-3,6+4,5+3=16,4-1,1x-y
(½x+3y-5,5)-(¾x-6,5y+7.6)+(2¼x+⅖y-8,8)=
=½x+3y-5,5-¾x+6,5y-7.6+2¼x+⅖y-8,8=-21,9+2x+9,7y
(x³+2y²-1,5)-(3x³-4y²-5)+(2x³-5y²-6,5)=x³+2y²-1,5-3x³+4y²+5+2x³-5y²-6,5=
=-y²-3