Answer:
n = -7 or n = -7/5
Step-by-step explanation:
5n^2 + 36n + 7 = 0
ac = 35
b = 36 find two numbers : 35 and 1 (multiply you get 35, add you get 36)
5n^2 + 35n + n + 7 = 0
5n( n + 7) + 1( n + 7 ) = 0
(5n + 7) (n + 7) = 0
n + 7 = 0 n = -7
or 5n + 7 = 0
5n = -7
n= -7/5
so, n = -7 or n = -7/5
you can try to replace, you will find the answer is 0 ,
5n^2 + 36n + 7 = 0
