(9x-1)+(9*2x) = 324
9x-1+(18x) = 324
9x-1+18x = 324
27x-1 - 324
27x = 324+1
27x = 325
x = 325 в знаменатели 27 325/27
Y=x²/2
x 0 +-1 +-2 +-3 +-4 +-5 +-6
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y 0 0.5 2 4.5 8 12.5 18
1/3*1/3*1/3*1/3=1/81
1/81*243=3
1/5*1/5*1/5=1/125
1/125*500=4
3+4=7