Respuesta :

serandulnathsm

Answer:

4th one

Step-by-step explanation:

a^-2 goes down and become a^2 and

[tex] {a}^{2} \times {a}^{2} = {a}^{4} [/tex]

b^-1 goes up and become b

[tex] {b}^{2} \times {b}^{1} = {b}^{3} [/tex]

that why answer is 4th...mark me brainliest please

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