How do you evaluate the expression $n^{2}$ $n^2$ when n=7 and when n= 0.4?

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Answer 1 · 2017-05-26T02:31:20

See a solution process below:

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

$n^{2}$ $color(red)(n)^2$ becomes:

$7^{2} \Rightarrow 7 \cdot 7 \Rightarrow 49$ $color(red)(7)^2 => 7 * 7 => 49$

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

$n^{2}$ $color(red)(n)^2$ becomes:

${(0.4)}^{2} \Rightarrow 0.4 \cdot 0.4 \Rightarrow 0.16$ $(color(red)(0.4))^2 => 0.4 * 0.4 => 0.16$

How do you evaluate the expression n2n^2 when n=7 and when n= 0.4?