zad1. oblicz wartosc wyrazenia dla podanej wartosci zmiennej
a)-x do potegi 5 + 4x do potegi 3+8
x=-pierwiastek z 2
f(x)=-x⁵+4x³+8
f(-√2)=-(-√2)⁵+4·(-√2)³+8=-(-4√2)+4·(-2√2)+8=4√2-8√2+8=-4√2+8
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f(x)=-x⁵+4x³+8
f(-√2)=-(-√2)⁵+4·(-√2)³+8=-(-4√2)+4·(-2√2)+8=4√2-8√2+8=-4√2+8