1. 7x-3(5x-2)-6(7+2x)=
2.-5(3y-7)-2(6+4y)+3y=
3.5x-(2-4x)+8x-7=
4.-2a(4a-1)+5a(3a+2)=
proszę o pomoc
1.
7x-3(5x-2)-6(7+2x)=
7x-15x+6-42-12x=
-20x-36
2.
-5(3y-7)-2(6+4y)+3y=
-15y+35-12-8y+3y=
-20y+23
3.
5x-(2-4x)+8x-7=
5x-2+4x+8x-7=
17x-9
4.
-2a(4a-1)+5a(3a+2)=
-8a²+2a+15a²+10a=
7a²+12a
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1.
7x-3(5x-2)-6(7+2x)=
7x-15x+6-42-12x=
-20x-36
2.
-5(3y-7)-2(6+4y)+3y=
-15y+35-12-8y+3y=
-20y+23
3.
5x-(2-4x)+8x-7=
5x-2+4x+8x-7=
17x-9
4.
-2a(4a-1)+5a(3a+2)=
-8a²+2a+15a²+10a=
7a²+12a