Zadanie 6
P_k=a^2=(2x)^2=4x^2 pole kwadratu
3*4x^2=12x^2 pole prostokąta
Zadanie 8
a)
\frac{12xy^2}{4}=3xy^2
b)
\frac{5a*2a^2}{20}=\frac{10a^3}{20}=\frac{a^3}{2}
c)
\frac{6x^2y}{3y}=2x^2
d)
\frac{15m^3n^2}{10n}=1,5m^3n
e)
\frac{3bc^5}{bc^3}=3c^{5-3}=3c^2
f)
\frac{s^3t^2\sqrt2}{s^2t}=s^{3-2}t^{2-1}\sqrt2=st\sqrt2
g)
\frac{2n^2*6v^3}{4n^2v}=\frac{12n^2v^3}{4n^2v}=3v^{3-1}=3v^2
h)
\frac{2p^3*9q^4}{90p^2q^2}=\frac{18p^3q^4}{90p^2q^2}=0,2p^{3-2}q^{4-2}=0,2pq^2