Question #17bca

1 Answer
Jim G.
Nov 9, 2016

1427

Explanation:

When evaluating expressions with color(blue)"mixed operations" there is an order which must be followed.

Follow the order as set out in the acronym PEMDAS ( Parenthesis , Exponents, Multiplication, Division, Addition, Subtraction )

rArr3^6-9^2+5+18xx43

=729-81+5+18xx43larrcolor(red)"exponents"

=729-81+5+774larrcolor(red)"multiplication"

Addition and subtraction is now performed from left to right.

rArr729-81+5+774=1427larrcolor(red)"addition/subtraction"

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