Odpowiedź:
4. (-5,5+1/4)*(-2)= (-4,75)*(-2)= 9,5
-1 1/3*(-0,3)^2= -1 1/3* 0,09= -4/3*9/100=(-3/25)
-4,9*(1/7)^2-0,02= (-49/10)*1/49-1/50= (-1/10)-1/50= (-5/10)-1/50=(-6/50)=(-3/25)
[8/3-4/3*(-1/4)]*3,5= (skróć 4) (8/3+1/3)*3,5= 3*3,5= 10,5
9/25:(-3)= 9/25* 1/3= (skróć 3 i 9) (-3/25)
-0,5+11= 10,5
5. 2*(3+4)*5-2*5= 2*7*3*5= 210
2*3+(4*5-2)*5= 6+(20-2)*5= 6+18*5= 6+90= 96
2*(3+4*5)-2*5=2*(3+20)-10= 2*17-10= 24
2*(3+4*5-2)*5=2*(3+20-2)*5= 2*21*5= 210
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Odpowiedź:
4. (-5,5+1/4)*(-2)= (-4,75)*(-2)= 9,5
-1 1/3*(-0,3)^2= -1 1/3* 0,09= -4/3*9/100=(-3/25)
-4,9*(1/7)^2-0,02= (-49/10)*1/49-1/50= (-1/10)-1/50= (-5/10)-1/50=(-6/50)=(-3/25)
[8/3-4/3*(-1/4)]*3,5= (skróć 4) (8/3+1/3)*3,5= 3*3,5= 10,5
9/25:(-3)= 9/25* 1/3= (skróć 3 i 9) (-3/25)
-0,5+11= 10,5
5. 2*(3+4)*5-2*5= 2*7*3*5= 210
2*3+(4*5-2)*5= 6+(20-2)*5= 6+18*5= 6+90= 96
2*(3+4*5)-2*5=2*(3+20)-10= 2*17-10= 24
2*(3+4*5-2)*5=2*(3+20-2)*5= 2*21*5= 210
Szczegółowe wyjaśnienie: