Question

Z.8/102zz (zbiór zadań) "Matematyka wokół nas" kl.1 gim.
/ - kreska ułamkowa
a) -3*4*(*3 1/4)*(-3)=
b) -2,8a*40ax*(-1)*a² =
c) (-6y)*(-y)*(0,2)*y=
d) (2 1/2)*x*(-1 4/5)*(-10)xy=
e) -4*(-x)*(-y)*(-y)*x*y² =
f) 1/3 *a*a*(-b)*a*(-b)* 1/3=

Answer 1

a) -3*4*(*3 1/4)*(-3)=
36* 13/4=
9*13=
117
__________________
b) -2,8a*40ax*(-1)*a² =
112a⁴x
____________________
c) (-6y)*(-y)*(0,2)*y=
1,2y³
___________________
d) (2 1/2)*x*(-1 4/5)*(-10)xy=
5/2 *x*(- 9/5)*(-10)xy=
45/10 *10x²y=
45x²y
_____________________________
e) -4*(-x)*(-y)*(-y)*x*y² =
4x²y⁴
_________________________
f) 1/3 *a*a*(-b)*a*(-b)* 1/3=
1/9 a³b²
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