Convert to standard form 25x^2 + 4y^2 - 50x -75 = 0

Step-by-step explanation:

we have

Convert to standard form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

Factor the leading coefficient of each expression

Complete the square twice. Remember to balance the equation by adding the same constants to each side.

Rewrite as perfect squares

Divide both sides by the constant term to place the equation in standard form

Simplify

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.