Question

-x^2+10x-16
find the zeros of the polynomial

Answer 1

Are you studying the quadratic equation?

Answer 2

devide away the -
x^2 -10x + 16 = 0
(x-5)^2 = 9
x-5 = +-sqrt(9
x = 5 +- sqrt(9)
x = 5 + sqrt(9) and x = 5 - sqrt(9)
this is the method of completing the square

Answer 3

x = 5 + sqrt(9) =8 and x = 5 - sqrt(9)=2

Answer 4

why not just factorise

-(x -2)(x -8) = 0

then x = 2, 8

Answer 5

I complete the square everytime, because it always works and is super easy.