How do you simplify #4 + [ -1 ( -2 -1 )] ²# using PEMDAS?

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Answer 1 · 2016-08-02T00:06:58

#13#

Identify the terms and simplify each to give a single answer.
Within a term, parentheses first, then powers and roots, then multiply and divide.

#color(blue)(4)color(red)( + [ -1 ( -2 -1 )] ²) " there are 2 terms"#

=#color(blue)(4)color(red)( + [ -1 color(black)(( -2 -1) )] ²)#

=#color(blue)(4)color(red)( + [ -1 xx(color(black)( -3 ))] ²) #

=#color(blue)(4)color(red)( + [ 3 ] ²) #

=#color(blue)(4)color(red)( + 9) #

=#13#