Question

ex 8 (c) si 10(b,c) ​

Answer 1

Răspuns:

Explicație pas cu pas:

8) c) G(x) = (x²-3)/(x³-8x) = (x²-3)/[x(x²-8)] =

= (x²-3)/[x(x-2√2)(x+2√2)]

=> x ∈ R - {-2√2 ; 0 ; 2√2}

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10) b) F(x) = x³/(x²-2x+1) = x³/(x-1)² => x ∈ R-{1}

10) c) G(x) = x²/(9x²-6x+1) = x²/(3x-1)² => x ∈ R-{1/3}