Answer:
the equivalent expression is 11
Step-by-step explanation:
the solution is so simple :-
=》4- (-7)
=》4 + 7
( it became plus because, when two minus (-) are multiplied with each other, then they form plus (+)
=》11
They will be in the form: a/b / c/d
you can re-write it as a/b * d/c...then it will be easy for you!!!
Yes, they are equivalent.
f(-9+h)= (-9+h)² = h²-18h+81
f(-9+h)-f(-9)=h²-18h+81 -81 because : f(-9) = (-9)² = 81
f(-9+h)-f(-9)=h²-18h
(f(-9+h)-f(-9))/h=(h²-18h)/h = h(h-18)/h =h-18
lim (f(-9+h)-f(-9))/h = lim(h-18= - 18
h→0 h→0
