teresahinton73 teresahinton73
  • 01-06-2019
  • Mathematics
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What is the value of 3x^2+4y^2 if x=2,y=1 and z=-3

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kudzordzifrancis
kudzordzifrancis kudzordzifrancis
  • 01-06-2019

ANSWER

16

EXPLANATION

The given expression is;

[tex]3 {x}^{2} + 4 {y}^{2} [/tex]

If x=2, y=1 and z=-3, we substitute the values into the expression and solve.

We substitute to obtain;

[tex]3 {(2)}^{2} + 4 {(1)}^{2} [/tex]

We evaluate to get;

[tex]3 {(4)} + 4 {(1)}[/tex]

We multiply out to get:

[tex]12+ 4 = 16[/tex]

Therefore the value of the given expression is with the given values is 16

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