23.

By completing the square, solve

x^2 + 12x - c=0

where c is a positive constant.

Give your answers in surd form in terms of c.

You must show your working.

If 3/5 of a chorus is singing. What fraction of the chorus is not singing?

Given the functions f (x) = 2x^2-8x, g (x) = x^2-6x+1 and h9x) = - 2x^2, rank them from least to greatest based on their axis of symmetry

Dave can complete a sales route by himself in 4 hours. James can do the same job in 5 hours. How long will it take them to do it working together?

Make a list of the different properties that can be used to identify a mineral.

6 is 10 times as much as

There is jar of jellybeans on principal coopers desk 40% of the jelly beans are red. there are 28 red jeallybeans how many jelly beans are there in all

Tan (x) = 2 Solve for x. Round the answer to the nearest tenth.

The expression 5/9 (F - 32) shows how to convert from degrees Fahrenheit to degrees Celsius, where F represents the temperature in degrees Fahrenheit. What is the temperature in degrees Celsius when the temperature is 113 degrees F?

Simplify the remaining expression completely x^6y^4/xy^2

Greatest common factor of 8x and 40?