Odpowiedź :
[tex]a)\\\\2-4*(-5)=2+20=22\\\\b) \\\\1\frac{1}{2} * \frac{1}{2} + \frac{3}{4} = \frac{3}{2} * \frac{1}{2} + \frac{3}{4} = \frac{3}{4} + \frac{3}{4} = \frac{6}{4} = 1\frac{2}{4} = 1\frac{1}{2}\\\\c) \\\\(-4)^{3}+(-4)^{2}+(-4)=-64 + 16 - 4 = -52\\\\d) \\\\5*(-\frac{1}{2})-2*(-1\frac{1}{4})=(-\frac{5}{2})-(-\frac{10}{4})=(-\frac{10}{4})+\frac{10}{4} = 0\\\\e) \\\\0,25(-\frac{1}{2}-\frac{1}{2})=\frac{1}{4} - \frac{2}{2} = \frac{1}{4} = \frac{4}{4} = -\frac{3}{4}[/tex]
Odpowiedź:
Szczegółowe wyjaśnienie:
a/
2-4a =2-4×(-5)=2+20=22
b/
3/2b+3/4=3/2×1/2+3/4=3/4+3/4=6/4=3/2=1i1/2
c/
....=(-4)³+(-4)²+(-4)=-64+16-4=52
d/
5x-2y=5×(-1/2)-2×(-5/4)= -5/2+10/4= -5/2+5/2=0
e/
....=0,25×(-1/2-1/2) =0,25×(-1) = -0,25