Question

Solve 3n^2 + 5n - 1300 by splitting the middle term

Answer 1

3n²+5n-1300=0
or, 3n²+65n-60n-1300=0
or, n(3n+65)-20(3n+65)=0
or, (3n+65)(n-20)=0
Either, 3n+65=0
or, 3n=65
or, n=65/3
Or, n-20=0
or, n=20

Answer 2

3n² + 5n - 1300
3n² - 60n + 65n - 1300
3n(n - 20) + 65(n - 20)
(n - 20)(3n + 65)