RRB Government Jobs Exams

Simplify the following expressions and write them with positive exponents.
x ^2 x ^3

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RRB Other Question

2 - ( 3 - ( -5 ( 3x + 1 ) + 4 ) )

Problems with nested brackets: Simplify by removing the brackets and
grouping like terms.
a^-2*a^-3 ..WRITE WITH POSITIVE EXPONENET