Mr. Wonder now tries to simplify 4x and 4tx a.
Mr. Wonder thinks that since * = 1,
then 4x = 4. Is he correct? Substitute
three values of x to justify your answer.
b.
He also wonders if 4+x = 5. Is this
simplification correct? Substitute three
sives of x or use your calculator to compare the graphs of
g(x) = 4+x with h(x) = 5 to justify your answer.
Remember that 4+* is the same as (4 + x) = x.
Compare the results of parts (a) and (b) When can a rationa expression be simplified in this manner?
Which of the following expressions below is simplified comes how you know.
i.
+x+3 = ¥2
u+3
ii.
(x+2)(x+3） =x+2
x+3