Question

x^2+10x=-2

Answer 1

I'm suppose ti find out what number to add to both sides

Answer 2

aadd (5)^2 to both sides and try to complete the squares

the easy way to look which numer shall be added is look at the x term then add square of the half of it
here coefficient of x is 10 so its half will be 10/2=5
add (5)^2=25 on both sides .

Answer 3

oh okay, thank you.