brandonrobles86
brandonrobles86
07-02-2018
Mathematics
contestada
Evaluate 3x^2-1 when x=2
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DrPepper21
DrPepper21
07-02-2018
3x^2-1, x=2
3(2)^2-1
3(4)-1
12-1
11
When x=2, 3x^2-1=11.
Answer Link
CrazyVibez
CrazyVibez
07-02-2018
Hey there,
3x^2 - 1 (x = 2)
Plug in 2 for x
3(2)^2 - 1
Do the exponent
3(4) -1
Multiply and the subtract
12 -1 = 11
The answer would be 11
Hope I helped :)
~Char
Answer Link
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