zad 1 .wykonaj mnożenie i zredukuj wyrazy podobne :
1) x(5-y)+2-4xy
2) 3x+5y-(x-3)*(y+2)
3) 4x+3(x+y)-4(y-x)
4) -2(x-3y)+(4x-2)-(2-y)
5) 0,5(x+7y)-(0,5x+3)*(1+y)
6) (a+2+6) * (c+1)
7) 6x(x-2)*(4y+1)
8) 4(x-7)*(y-4x+2)
9) 2(x+y+z)*(2+x+3z)
10) -a(b+8)-4a+3ab
11) 4a(5+b)+20a-3ab
zad 2 . rozwiąż równanie
1) 3x(1+x)=3x^2 + 9
2) 2x(2-2x)=16-4x^2
3) -2(5x^2 +2)=5x(4-2x)
4)-7y(y-3)+y^2=-6y-63
duzo pkt dam naj odp.
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1) x(5-y)+2-4xy = 5x-xy+2-4xy=5x+2-5xy
2) 3x+5y-(x-3)*(y+2)=3x+5y-xy+2x-3y-6=5x+2y-xy-6
3) 4x+3(x+y)-4(y-x)= 4x+3x+3y-4y+4x=11x-1y
4) -2(x-3y)+(4x-2)-(2-y)=-2x+6y+8x-4xy+4+2y=y+6x-4xy+4
5) 0,5(x+7y)-(0,5x+3)*(1+y)=0.5x+3.5y-0.5x-0.5xy+3-3y=0.5y-0.5xy+3
6) (a+2+6) * (c+1)=ac+1a+2c+2+6c+6=8c+ac+1a+8
10) -a(b+8)-4a+3ab=-ab-8a=4a+3ab=-12a+2ab
11) 4a(5+b)+20a-3ab=20a+4ab+20a-3ab=40a+ab