Why can’t the coefficient of x and y be zero

Becaus rig a coefficient is zero them in reality it is just a term, if it is a coefficient is has to be a number that will be shown in a equation

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!

can someone answer this question plz

step-by-step explanation: