= (a-5).(a+3)
= a²+3a-5a-15
= a²-2a-15
300.50 (assuming the first x means multiplication )
Answer:
The correct option is b.
Step-by-step explanation:
To find the number of solutions, we need to solve the equation:

Let's group all the "x" on the equation.
Now, let's solve for "x".
Therefore, the equation has one solution. The correct option is b.
I hope it helps you!
Answer:
The probability a person will ace a test given that the person got a
good night's sleep the previous night.
Step-by-step explanation:
A conditional probability is a probability that something will occur given that something else has happened.
C The probability a person will ace a test given that the person got a
good night's sleep the previous night.
Beck add like terms so you get
4x^2 -4x-15
lucy factor our negative so you left with -4x^2 +5x -10 +8x^2 -9x -5
simplify 4x^2 -4x -15
therefore both students answers simplify to 4x^2 -4x -15