Answer:
B
Step-by-step explanation:
e d g e n u i t y 2020
Tyna's mistake was to not solve the exponents in the expression correctly.
An expression is a mathematical statement which consists of variables, constants and mathematical operators.
The expression is
[tex]\rm \dfrac{3x^3}{12x^{-2}}[/tex]
The expression will be simplified using Exponent Rule
[tex]\rm a^m / a^n = a^{m-n}[/tex]
(3/12) x³⁻⁽⁻²⁾
(1/4) x⁵
The expression is solved as (1/4) x⁵, the solution that Tyna got is x/4, she did the mistake in solving the exponents and she added 3-2 = 1, rather than subtracting.
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