Odpowiedź :
Odpowiedź:
w(x) = x³ - 4x - 6 = (√2 + 1)³ - 4(√2 + 1) - 6 =
= (√2)³ + 3(√2)² * 1 + 3√2 * 1² + 1³ - 4√2 - 4 - 6 =
= 2√2 + 3 * 2 + 3√2 + 1 - 4√2 - 10 = 5√2 + 7 - 4√2 - 10 = √2 - 3
Odpowiedź:
w(x) = x³ - 4x - 6 = (√2 + 1)³ - 4(√2 + 1) - 6 =
= (√2)³ + 3(√2)² * 1 + 3√2 * 1² + 1³ - 4√2 - 4 - 6 =
= 2√2 + 3 * 2 + 3√2 + 1 - 4√2 - 10 = 5√2 + 7 - 4√2 - 10 = √2 - 3