Odpowiedź:
a]
(x-3)/(x+1)= -7/3 x≠-1
3x-9=-7x-7
10x=2
to argument x = 1/5
b]
g(√3)= (√3-3)/(√3+1)= (√3-3)*(√3-1)/(√3+1)(√3-1)= ( 3-√3-3√3+3)/(3-1)=
(6-4√3)/2=3-2√3 = 3+(-2√3)
Szczegółowe wyjaśnienie:
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Odpowiedź:
a]
(x-3)/(x+1)= -7/3 x≠-1
3x-9=-7x-7
10x=2
to argument x = 1/5
b]
g(√3)= (√3-3)/(√3+1)= (√3-3)*(√3-1)/(√3+1)(√3-1)= ( 3-√3-3√3+3)/(3-1)=
(6-4√3)/2=3-2√3 = 3+(-2√3)
Szczegółowe wyjaśnienie: