Question

Determine the value of y, if x is 5.

y = x² - 6

Answer 1

19

Explanation:

if x=5

y=x^2 - 6

y= 5^2 - 6

y= 25- 6

y=19

Answer 2

The correct answer is y = 19.

What is an exponent?

An exponent is a mathematical quantity that you raise a base number to. By raising the base, you are multiplying the base number by itself an ⁿth number of times. Hence, if you are raising a base to the second power, you would multiply the base by itself twice (i.e., 6² = 6 × 6 = 36).

Solve

To begin, first declare the known values and the value that needs to be solved.

`y: \text{Unknown; Solving for}\\x: 5`

Then, substitute the known values into the equation.

`y=(5)^2-6`

Then, using PEMDAS (Parentheses, Exponents, Multiplication/Division, Addition/Subtraction), raise the base number to the declared exponent.

`5^2=5*5=25`

Finally, use PEMDAS once more to simplify the equation and solve for y.

`y=25-6=19\\\\\boxed{y=19}`

Final Answer

Therefore, the correct answer is y = 19.