What is factor n^2-n-20 ?

The solution to factor n^2-n-20 is (n+4)(n-5)

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factor n^2-n-20

factor

n^{2} - n - 20

(n + 4) (n - 5)

Solution steps

n^{2} - n - 20

Break the expression into groups

= (n^{2} + 4 n) + (- 5 n - 20)

Factor out

n

from

n^{2} + 4 n : n (n + 4)

Factor out

- 5

from

- 5 n - 20 : - 5 (n + 4)

= n (n + 4) - 5 (n + 4)

Factor out common term

n + 4

= (n + 4) (n - 5)

14 x^{2} - 28 = 0

- 5 m^{2} - 15 m + 50

8 k^{2} - 18

20 \leq \frac{m}{5} + 12

\frac{( x - 2 )}{12} - \frac{( x + 1 )}{12} = \frac{( 4 x - 3 )}{12}