How do you evaluate the following expression when x = 3 and y = 4: for $3 x^{2}$ $3x^2$ ?

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How do you evaluate the following expression when x = 3 and y = 4: for $3 x^{2}$ $3x^2$ ?

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Answer 1 · 2015-09-11T00:29:39

If $x = 3$ $x=3$ then $3 x^{2} = 27$ $3x^2 = 27$

Explanation:

Based on $x = 3$ $color(red)x=color(blue)3$ , substitute the value $3$ $color(blue)3$ for $x$ $color(red)x$
in the expression $3 x^{2}$ $3color(red)x^2$

$3 x^{2} = 3 \cdot 3^{2} = 3 \cdot 9 = 27$ $3color(red)x^2 = 3*color(blue)3^2 = 3*9 = 27$

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How do you evaluate the following expression when x = 3 and y = 4: for $3 x^{2}$ $3x^2$ ?

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How do you evaluate the following expression when x = 3 and y = 4: for $3 x^{2}$ $3x^2$ ?