Odpowiedź:
a) = 4a+20b-12c
b) =
[tex]6 {x}^{2} - 14xy + 4x[/tex]
c) =
[tex] - 20 {a}^{3} + 8ab + 32a[/tex]
d) = -4m+2t-6
e) =
[tex] \frac{2}{3} \times \frac{6}{1} r - \frac{2}{3} \times \frac{9}{1} s + \frac{2}{3} \times \frac{3}{1} = 4r - 6s + 2[/tex]
f) =
[tex]3 {a}^{2} - 15ab + 12ab - 8 {b}^{2} = 3 {a}^{2} - 8 {b}^{2} - 3ab[/tex]
g) =
[tex]35 {x}^{2} - 7xy - 12xy + 6 {x}^{2} = 41 {x}^{2} - 19xy[/tex]
h) =
[tex] - 12ps - 6 {s}^{2} + 12ps - 8 {p}^{2} = - 6 {s}^{2} - 8 {p}^{2} [/tex]
i) =
[tex] - 12 {x}^{2} + 6x + 12 {x}^{2} - 6x = 0[/tex]
j) =
[tex] {a}^{2} - 4ab - 5ac + 2ab + {b}^{2} - 3bc + 5 {c}^{2} + 3bc + {c}^{2} = {a}^{2} + {b}^{2} + 7 {c}^{2} - 9ac + 2ab[/tex]
Proszę bardzo mam nadzieję, że pomogłem!
