How do you factor 3n2+21n24?

2 Answers
Jul 26, 2017

(x - 1)(3x + 24)

Explanation:

y=3n2+21n24.
Because a + b + c = 0, use shortcut.
The 2 factors are:
(x - 1) and (x+ca=x+243)
y=3(x1)(x+243)=(x1)(3x+24)

Jul 26, 2017

3(n1)(n+8)

Explanation:

Initially you can factor a 3 out of everything giving you :

3(n2+7n8)

Then simply factor (n2+7n8) which gives you :

3(n1)(n+8)