Answer:C
Step-by-step explanation:
(a-5)*(a+3）
a*a+a*3+(-5)*a+(-5)*3
a^2+3a-5a-15
a^2-2a-15
What are the following options?
You need to multiply 15/1 X 3X5.
<span>Multiply the numerators (15 and 3) to get 45. </span>
<span>Multiply the denominators (1 and 5) to get 5. </span>
<span>So now you have reduced the fraction to 45/5 </span>
<span>Simplify it. 5 goes into 45 9 times. </span>
<span>9 is your answer.</span>
