g(x) = x^2 - 2x: Find g(9)

wherever you have an x, put in 9

g(x) = x^2 - 2x
g(9) = 9^2 - 2*9 = ......

g(9) = 9^2 - 2*9 =

multiply the numbers:2*9=18 so
g(9)=9^2-18
9^2=81 so
g(9) =81-18
subtract the numbers: 81-18=63 so
g(9) = 63
divide both sides by 9 g(9)/9 = 63/9 so
g = 7

To find g(9), you need to substitute the value 9 into the function g(x) = x^2 - 2x and solve the equation.

Step 1: Start with the function g(x) = x^2 - 2x.
Step 2: Replace x with 9 in the function g(x).
g(9) = (9)^2 - 2(9)
Step 3: Evaluate the expression on the right side of the equation.
g(9) = 81 - 18
Step 4: Simplify the expression.
g(9) = 63

Therefore, g(9) = 63.