The value of the expression [tex]3x^2+x^{-2}[/tex] at x=2 will be equal to 8.
What are mathematical expressions?
Expressions are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between.
Evaluate [tex]3x^2+x^{-2 }[/tex]when x=-2
Just plug in x = - 2 into the expression
[tex]= 3(-2)^2 + (-2) -2[/tex]
[tex]= 3(4) -2 - 2[/tex]
[tex]= 12 - 4[/tex]
[tex]= 8[/tex]
Hence value of the expression [tex]3x^2+x^{-2}[/tex] at x=2 will be equal to 8.
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