algebra
posted by babygirl on .
simplify and show all work 11+12^2(11)*12
is this right11+144(11)*12
155(11)*12
144*12
1,928
simplify (8m)(7m+2)
15m2
according to order of operation what should be done first when evaluating this expression do not solve [10(2+1)]9

11 + 12^2  (11)*12
11 + 144 + 132
155 + 132
287
you should perform multiplication operation (the 11*12) first, not subtraction (not the 14411).
(8m)  (7m + 2)
8m + 7m  2
m  2
you should distribute the negative sign to the terms inside the parenthesis. thus their sign change to its opposite (the 7m becomes +7m and +2 becomes 2)
for the third question, the first operation you must do is to simplify the terms inside the parenthesis. recall PEMDAS: Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction.
hope this helps~ :)