A²+18a+81-(2a+18)(a-5)+(a²-10a+25)
a²+18a+81-(2a²-10a+18a-90)+a²-10a+25
a²+18a+81-2a²+10a-18a+90+a²-10a+25
81+90+25=196
Ответ: 196
G ' (x) = (3 - 2x + 1/2*x^2) ' =
= 0 - 2*1 + 1/2*2x = - 2 + x
k = g ' (x0) = g ' (3) = - 2 + 3 = 1
52 000 000 =
![5,2*10^7](https://tex.z-dn.net/?f=5%2C2%2A10%5E7)
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