How do you evaluate xy - z, when x = -2, y = 3 and z = 1?

2 Answers
Mar 10, 2018

Answer:

#-7#

Explanation:

#"substitute the given values into the expression"#

#rArrxy-z#

#=(color(red)(-2)xxcolor(blue)(3))-color(magenta)(1)#

#=-6-1=-7#

Mar 10, 2018

Answer:

#xy-z=-7#

Explanation:

When given an algebraic equation, we simply plug in the values.

#-># Note #xy# means #x xx y#

#-> xy-z -> -2xx3-1#

#-2xx3=-6#

#-6-1=-7#

#therefore# #xy-z=-7#