Question

Help Em Với ):

Answer 1

b: \(\left(x+2\right)^3+\left(x-3\right)^2-x^2\left(x+5\right)\)

\(=x^3+6x^2+12x+8+\left(x^2-6x+9\right)-x^3-5x^2\)

\(=x^2+12x+8+x^2-6x+9=2x^2+6x+17\)

c: \(\left(3x^3-4x^2+6x\right):3x\)

\(=\frac{3x^3}{3x}-\frac{4x^2}{3x}+\frac{6x}{3x}\)

\(=x^2-\frac43x+2\)