√25-a=2+√15-a
25-a=4+15-a+4√15-a
25-a-19+a=4√15-a
6=4√15-a
36=16(15-a)
36/16=15-a
a=15-36/16 = 15 - 2 4/16= 15 - 2 1/4 = 14 4/4 - 2 1/4 = 12 3/4
An = a1 + d(n - 1)
d = (an - a1)/(n - 1)
d = (a22 - a1)/(22 - 1) = (24 - (-18))/21 = 42/21 = 2
8p+4>1, 8p>1-4; 8p> -3, p> -3/8. Ответ: p> -3/8.
(х - у)^4
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