How do you evaluate 2[3(75)+4(8+2)]?

2 Answers
Mar 4, 2018

Using PEMDAS

2[3(75)+4(8+2)]

P - parentheses which are the brackets.

E - exponents

M - multiplication

D - division

A - addition

S - multiplication

We start with the parentheses..

2[3(2)+4(10)]

=2[6+40]

=2[46]

=92

Mar 4, 2018

92

Explanation:

Start with the inner brackets and simplify each to a single answer.

2[3(75) + 4(8+2)]

=2[3(2) + 4(10)] multiply to remove the brackets

=2[6 + 40] simplify inside the square brackets

=2[46] multiply to remove the square brackets

=92

It may seem that the usual order of operations is not being followed here because we do:

  • addition and subtraction
  • multiplication
  • addition
  • multiplication

However, all of these are just to get rid of the brackets.
There is only only term but we work from the inner brackets, outwards.