I AM GOING CRAZY!!!! Can anybody help PLEASE!!!!!?

Question

HELP ME complete the square, and find the roots of the quadratic equation.

5.x2 + 16x = 0

Answer 1

The roots are 0 and -16/5

To solve any quadratic equation eg. ax^2+bx+c, you can apply formula x= (-b+-sqrt(b^2-4ac))/2a

Answer 2

Since your problem states completing the square, we eschew the easy way:

x^2 + 16x +64 - 64 = 0
x^2 + 16x +64 = 64
(x+8)^2 = 64
x + 8 = ± 8
x = 0, -16

Answer 3

5x^2+16x=0 can be written as
x(5x+16)=0
therefore, x=0 and 5x+16=0
so, x=0 or x=(-16/5)