Sprawdź czy zachodzi równość: a) 5/pierwiastek 6+1-pierwiastek6= -1
b) całość pod pierwiastkiem 9-4pierwiastek z5=pierwiast 5-2
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a)
5 /( p(6) + 1) = [ 5*( p(6) - 1)]/[ ( p(6) + 1)*( p(6) - 1)} =
=[ 5*( p(6) - 1 )]/[6 - 1] = p(6) - 1
zatem
5/( p(6) + 1) - p(6) = p(6) - 1 - p(6) = - 1
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b)
9 - 4 p(5) = ( 2 - p(5))^2
zatem
p [ 9 - 4 p(5) ] = I 2 - p(5) I = -2 + p(5) = p(5) - 2
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