Question

Ayuda!! No entiendo la 1 y la 3 porfa!!
son ecuaciones incompletas

Answer 1

1)7x^2-63=0
7x^2=63
x^2=63/7
x^2=9
x=3
3)11x^2-44=0
11x^2=44
x^2=44/11
x^2=4
x=2

Answer 2

7x²-63=0
7x²=63
x²= 63/7
x=√9
x=3

11x²-44=0
11x²=44
x²=44/11
x=√4
x=2