Question

Evaluate (6x+3y)-z^(2)÷(2x) when x=-3,y=4,z=-6

Answer 1

24.

Explanation:

1. Write the expression.

`(6x+3y)-(z^(2))/((2x))`

2. Substitute the variables by the respective given value using parenthesis.

`(6(3)+3(4))-((6)^(2))/((2(3)))`

3. Simplify the expression by applying the hierarchy or mathematical operations.

a) Solve parenthesis.

`(18+12)-((6)^(2))/(6)\\ \\30-((6)^(2))/(6)`

b) Solve the exponent.

`30-(36)/(6)`

c) Divide.

`30-6`

d) Subtract.

`24.`