1)2b+3ac
2)5a^2-3b
3)2xx-2x
4)6a^3
5) 8c^
6)25a^2b^2
1/2(x+2)+1/3(x+3)+1/5(x-5)=2
F(x)=12√x+3/4*x^4+C
---------------------------------
4х-3у=12 (*4)
<span>3х+4у=34 (*3) </span>
<span>
16х-12у=48 </span>
<span>9х+12у=102 </span>
<span>
25х=150 </span>
x=150 : 25
x=6
<span>
3*6+4у=34 </span>
<span>4у=16 </span>
y=16 : 4
y=4
<span>ответ: (6;4) </span>