expand (x+1)(x-1)(x-3)

الحلّ

expand

(x + 1) (x - 1) (x - 3)

x^{3} - 3 x^{2} - x + 3

خطوات الحلّ

(x + 1) (x - 1) (x - 3)

(x + 1) (x - 1) (x - 3)

وسّع:

(x^{2} - 1) (x - 3)

= (x^{2} - 1) (x - 3)

Apply FOIL method

(x^{2} - 1) (x - 3) : x^{3} - 3 x^{2} - x + 3

= x^{3} - 3 x^{2} - x + 3

(x^{3} - \frac{1}{4 x ^{3}})^{2}

\frac{z ^{8} \cdot z ^{2}}{z ^{5}}

(a^{2} + 8) (a^{2} - 7)

\frac{x ^{3} - 4 x - 15}{x - 3}

10 \frac{1}{2}