We are looking to find the point where the curve discontinued
Step 1: Factorise both numerator and denominator (if possible)
Step 2: Recognise the common factor, which is
Step 3: Equate the common factor to 0
Answer: -5
10/4= 2.5
5/2.5= 2
2 would be your first answer
32x2.5= 80
80 would be your second answer
Hope this helped
We have
so this is indeed a difference of squares. Factorizing would give
making the answer D.
We can further factor the first term here and write
but that's clearly out of the scope of this question.