równania wielomianowe

natasza00 · Post autor: **natasza00** » 22 lis 2009, o 18:27

\(\displaystyle{ 2x^{3} +x ^{2} - 8x -4=0\\
9x^{3} +12x =-4\\
-x^{3}+4x^{2}+3x-12=0\\
x ^{2}+10x+25=0\\
3x^{2}-2x-5=6x-x ^{2}}\)

piasek101 · Post autor: **piasek101** » 22 lis 2009, o 21:57

1.
\(\displaystyle{ x^2(2x+1)-4(2x+1)=0}\)

\(\displaystyle{ (x^2-4)(2x+1)=0}\) (dokończyć)

crittson · Post autor: **crittson** » 22 lis 2009, o 22:22

4. \(\displaystyle{ (x+5) ^{2}=0}\)

5. \(\displaystyle{ 4x ^{2} -8x-5=0}\)
\(\displaystyle{ x _{1} = - \frac{1}{2}}\)
\(\displaystyle{ x _{2} = \frac{5}{2}}\)