This expression is a generic quadratic expression, so the first thing we need to look at is the last term (-40). Is it negative or positive? What are the factors of it? If the last term is negative, we know that one binomial is a subtraction while the other binomial is an addition. You may be asking, "an addition or subtraction of WHAT?" A binomial factored out of a quadratic expression would look something like this: (x + ____). The blank would equal a factor of the last term. In this case, a pair of factors that would fit is 8 and 5.
8x5 = 40 and -8 + 5 = -3.
Plug it into the binomial example I provided above and....
(x - 8)(x+5)=40
Voila! You have your factored quadratic expression, hope this helps!
All are equivalent except 8 to 12
The sum of the digits is 81
sum the digits again and get 9
Therefore, as 9 is only divisible by 9 and 3 the answer is 'C'
Answer:
6
Step-by-step explanation:
In y = Asin(Bx + C) +D,
|A| is the amplitude
Amplitude: |-6| = 6
Answer:
x = 66
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable.