因式分解-4x^2+36

解答

因式分解

- 4 x^{2} + 36

- 4 (x + 3) (x - 3)

求解步骤

- 4 x^{2} + 36

因式分解出通项

4 : 4 (- x^{2} + 9)

= 4 (- x^{2} + 9)

因式分解

- x^{2} + 9 : - (x + 3) (x - 3)

= - 4 (x + 3) (x - 3)

f a c t or x^{3} - x^{2} + x + 3

\frac{2}{7} (\frac{665}{666}) + \frac{1}{9} = \frac{12}{5} (\frac{668}{666}) - \frac{14}{7}

f a c t or 3 x^{2} - 7 x + 2

\frac{4}{5 - 3 x} \leq - 1

f a c t or r^{2} + 9 r + 14