Respuesta :
Answer:
She added the exponents instead of subtracting them.
Step-by-step explanation:
She was to simplify:
[tex]\frac{3x^3}{12x^-^2}[/tex]
Dividing the numerator with 3 and the denominator with three gives:
[tex]\frac{x^3}{4x^-^2}[/tex]
Then, x³ ÷ [tex]x^{-2}[/tex] would be [tex]x^{3 - -2}[/tex] = [tex]x^{5}[/tex]
(Where there is division; we are supposed to subtract the exponents.)
So the final answer would be: [tex]\frac{x^5}{4}[/tex]
