How do you evaluate the expression #n^2# when n=7 and when n= 0.4?

1 Answer
May 26, 2017

Answer:

See a solution process below:

Explanation:

To evaluate this expression for when #n = 7# we need to substitute #color(red)(7)# for #color(red)(x)# in the expression:

#color(red)(n)^2# becomes:

#color(red)(7)^2 => 7 * 7 => 49#

To evaluate this expression for when #n = 0.4# we need to substitute #color(red)(0.4)# for #color(red)(x)# in the expression:

#color(red)(n)^2# becomes:

#(color(red)(0.4))^2 => 0.4 * 0.4 => 0.16#