The problem in the picture would be
x^2+10x+21
B not quiet sure but if anything try again : )
-9x7 mutiplies to be -63, and add up to be -2.
Answer:
b) change the places of the numbers in the numerator and the denominator for the second fraction
Step-by-step explanation:
In the phrase "keep change flip":
You "keep" the first fraction.
"Change" the division sign into a multiplication sign.
"Flip" (or switch) the places of the numerator and denominator in the second fraction.
Example:
÷ 

Hope this helps.