Respuesta :

5-x = 3

X is 2 as 5 minus 2 is 3

Then sub x=2 Into 3x^2

3 times by 2^2 is 3 x 4 which is 12

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Answer:

The value of 3[tex]x^{2}[/tex] is 12.

Step-by-step explanation:

The problem can be solved by using "algebraic expressions."

Get the value of x with the equation: 5-x=3

Step 1: 5-3 = x or x = 5-3

Step 2: x = 2

Now, that you know the value of x, substitute the value of x in 3[tex]x^{2}[/tex].

Step 3: 3 x [tex]2^{2}[/tex]

Step 4: 3 x 4

Answer: 12

The value of 3[tex]x^{2}[/tex] is 12.