Four mathematics problems in Grade 1 of junior high school, to process, please do me a favor, give points according to the answers 1. Given the quadratic power of X + the quadratic power of Y - 2x-6y + 10 = 0, find the value of X and y 2. Factorization: 9m quadratic - 4N quadratic + 4N-1 (y + 1) (2 power of Y + 1) - (2 power of Y + 1) 4. The second power of a + the second power of B - 6A + 4B + 13 = 0, and the value of a in B If all the questions are correct, you can get high marks

Four mathematics problems in Grade 1 of junior high school, to process, please do me a favor, give points according to the answers 1. Given the quadratic power of X + the quadratic power of Y - 2x-6y + 10 = 0, find the value of X and y 2. Factorization: 9m quadratic - 4N quadratic + 4N-1 (y + 1) (2 power of Y + 1) - (2 power of Y + 1) 4. The second power of a + the second power of B - 6A + 4B + 13 = 0, and the value of a in B If all the questions are correct, you can get high marks

A:
one
x^2+y^2-2x-6y+10=0,
(x^2-2x+1)+(y^2-6y+9)=0,
(x-1)^2+(y-3)^2=0,
x=1,y=3
two
9m^2-4n^2+4n-1
=9m^2-(4n^2-4n+1)
=9m^2-(2n-1)^2
=(3m+2n-1)(3m-2n+1)
three
(y+1)(y^2+1)-(y+1)^2
=(y+1)(y^2+1-y-1)
=(y+1)(y^2-y)
=(y-1)y(y+1)
four
a^2+b^2-6a+4b+13=0,
(a^2-6a+9)+(b^2+4b+4)=0,
(a-3)^2+(b+2)^2=0,
a=3,b=-2