Practice problem
Are these two formulas identical?
f(x)=x2+2x+1f(x)=x^2+2x+1f(x)=x2+2x+1
f(x)=−x2−2x−1f(x)=-x^2-2x-1f(x)=−x2−2x−1
Yes
No
Not enough information
Type a concept, like “slope” or “photosynthesis”.