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.
