When a=2, b=3, x=4, and y=5,
evaluate:
Let's replace b, x and y by the appropriate values:
now let's solve what is inside the parenthesis:
again more solving inside the second parenthesis:
and again, first multiplying what is indicated. Recall that the rule PEMDAS for order of operations indicates that Parenthesis have to be solved first, then exponents, then multiplications and divisions, and the VERY LAST is additions and subtractions:
You do the same type of replacement of variables wit numbers, and then use of the rules for order of operations to evaluate the rest.
Like:
and then evaluate:
