Question

Evaluate the expression when x=10, y=−2, and z=−5. −x2+6zy=

Answer 1

x = 10

y = -2

z = -5

-x2 + 6zy = ???

Plug it in:

-(10)(2) + 6(-5)(-2) = ???

-10 x 2 + 6 x 10= ???

-20 + 60 = 40

Therefore, plugging the values in would make it equal 40.