" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x=√3 lub x=-√3 lub x=1
Odp. Z podanego zbioru A są to liczby -√3 i 1.
2. a)W(x)+P(x)=x³-4x²+1+x²-4=x³-3x²-3
b)P(x)-2W(x)=x²-4-(2(x³-4x²+1))=x²-4-(2x³-8x²+2)=x²-4-2x³+8x²-2=-2x³+9x²-6
c)W(x)*P(x)=(x³-4x²+1)(x²-4)=x(do 5)-4x(do 4)-4x³+17x²-4
4. a)4x²=20x //x
4x=20
x=20/4 = 5
b)2x³+4=4x²+2x
2x³-4x²-2x+4=0
2x²(x-2)-2(x-2)=0
(2x²-2)(x-2)=0
x=2 lub x =1 lub x=-1