Explicación paso a paso:
1.
(5n+3)² = (4n+4)² + (3n-1)²
25n²+30n+9 = 16n²+32n+16 + 9n²-6n+1
25n²+30n+9 = 25n²+26n+17
4n =8
n = 2
10cscθ+ 13cosθ
10(13/5) + 13(12/13)
26 + 12 = 38
2.
Sale la c
