X^3 + 3x^2 + 3x + 2 = 0

$$\begin{gathered} 1. {\mathrm{x}}^3+3{\mathrm{x}}^2+3\mathrm{x}+2 = 0 \\ 2. {(\mathrm{x}2 + 2\mathrm{x} - 5)}^{{}^2} = {(\mathrm{x}2 - \mathrm{x} + 5)}^2 3. {\mathrm{x}}^4 – 5{\mathrm{x}}^2 + 4 = 0 \\ 4. 0,3 {\mathrm{x}}^4 + 1,8{\mathrm{x}}^2 + 1,5 = 0 \\ 5. {\mathrm{x}}^3 + 2 {\mathrm{x}}^2 – {(\mathrm{x} - 3)}^2 = (\mathrm{x}-1)(\mathrm{x}2-2 ) \\ 6. \frac{\mathrm{x}}{\mathrm{x}+1} -10.\frac{\mathrm{x}+1}{\mathrm{x}}=3 \\ 7. {(\mathrm{x}}^{} \end{gathered}$$2 – 4x + 2)2 + x2 - 4x - 4 = 0 8. x+1x2-4x+1x+3=09. x+2x-5+3=62-xBài 2 : Cho pt x2+2x-3=0 có hai nghiệm là x1;x2(ko phải pt hãy tính giá trị của biểu thức sau)A.1x2+1x2                                           C.1x22+1x22B.x12+x22                                                D . x13 +x23E. 6x12+10x1x2+6x225x1x23+5x13x2                         F.3x12+5x1x2+3x224x1x22+4x12x2