The first step to solve a quadratic expression that's not set to zero is to solve the equation so that it is set to zero:

x² - 10x + 4 = -4x - 5
x² - 10x + 4 + 5 = -4x
x² - 10x + 4x + 9 = 0
x² - 6x + 9 = 0

Next, factor the quadratic equation:

x² - 6x + 9 = 0
(x - 3)(x - 3) = 0

For this expression to be true, the left side of the expression must equal zero. Therefore, (x - 3) must equal zero:

If (x - 3) = 0, x must equal 3

So the solution is that x = 3

To factor a quadratic expression, apply the FOIL method (First, Outside, Inside, Last) in reverse. First, find the two Last terms that will multiply to produce 8 as well and sum (Inside, Outside) to equal -6. For this problem, those two numbers are -4 and -2. Then, plug these into a set of binomials using the square root of the First variable (y²):

y² - 6y + 8
y² + (-4 - 2)y + (-4 x -2)
(y - 4)(y - 2)

To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)

-3c(c - y)
-3(-5)(-5 + 9)
-3(-5)(4)
(15)(4)
60

The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):

sa = 2lw + 2wh + 2lh
sa = (2 x 3 x 4) + (2 x 4 x 5) + (2 x 3 x 5)
sa = (24) + (40) + (30)
sa = 94

A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.