Proszę o pomoc :) daje 25 pkt
1. Zapisz w najprostszej postaci
a)9a+4b-3a+2b-12a-10b
b) (2/3 ab-b+1)+(1/3 ab+2b-5)-(4ab+3b-3)
c) 2a(4a ^3+2b)^3
d) (8p-12r+2s):2
e) (46-3ab)(76+ab)
f) (2a-3b)(a+2b)-3(5a-4b)
2. Wyłącz wspólny czynnik przed nawias
a) 3x+6y
b) 9a ^3 b-3a ^2+6ab
c)x^3 a+x^2 b-x
d) 12ab ^2+16b ^2
^ = potęga :)
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1.
a) 9a+4b-3a+2b-12a-10b=-6a-4b
b)(2/3ab-b+1)+(1/3ab+2b-5)-(4ab+3b-3)=2/3ab-b+1+1/3ab+2b-5-4ab-3b+3=-3ab-2b-1
c)2a(4a^3+2b)^3=2a(64a³+2b)³=2a*(64a⁶+2b³)=128a⁷+4ab³
d)(8p-12r+2s):2=4p-6r+s
e)(46-3ab)(76+ab)=3496+46ab-228ab+3a²b²=3496-182ab+3a²b²
f)(2a-3b)(a+2b)-3(5a-4b)=2a²+4ab-3ab+6ab-15a+12b=2a²+7ab-15a+12b
2.
a)3x+6y=3(x+2y)
b)9a³b-3a²+6ab=3a(3a²b-a+2b)
c)x³a+x²b-x=x(x²a+xb-1)
d)12ab²+16b²=4b²(3a+4)