rozłoż wielomian na czynniki
ania: W(x)= x3+5x2−x−5
W(x)=8x3−12x2−20x+30
25 lis 10:14
justa1234: w(x)=x3+5x2−x−5
=x3−x+5x2−5
=x(x2−1)+5(x2−1)
=(x2−1)+(x+5)
x2−1 U x=−5
25 lis 10:43
Święty: 1) x(x2−1)+5(x2−1)=(x2−1)(x+5)=(x−1)(x+1)(x+5)
2) 4x2(2x−3)−10(2x−3)=(4x2−10)(2x−3)=(2x−√10)(2x+√10)(2x−3)
25 lis 10:45