1 is 4 and 4 and 4 is 11 and 5 is 15
Hopefully this helps: 16(x^2 + 6x + y^2) = 5(8y + 63)
I'm not sure where to take it from there, but hopefully someone can build off of that. :)
X^2 - 6x + 5 = 0
(x - 5)(x - 1) = 0
x - 5 = 0; x =5
x - 1 = 0; x = 1
answer
x = 1, x =5
I DONT KNOW ESPONAL SO I CANT HELP SORRRRY