Question

Evaluate the expression,if x=12, y=8, and z=3xy2 – 3z 3

Answer 1

`(xy^2-3z)/(3)`

x = 12, y = 8, and z = 3

Substitute their values in the expression above

`((12)(8)^2-3(3))/(3)`

At first find 8^2

8^2 = 64

Multiply 3 by 3

3 * 3 = 9

`(12(64)-9)/(3)`

Now multiply 12 by 64

12 * 64 = 768

`(768-9)/(3)=(759)/(3)`

Simplify the fraction by dividing up and down

`(759)/(3)=253`

The value of the expression is 253