Question

Explain pleasehow to do this

Answer 1

(12 X 5 - 2^2) - 5

PEMDAS (order of operations)

Parentheses, exponents, multiplication/division, addition/subtraction...

We have a set of parentheses and an exponent within it so that is the first operation...

(12 X 5 - 4) -5

Next is multiplication/division

(60-4)-5

Now subtraction in the parentheses

56-5 and the final subtraction

51

Answer 2

12 x 5 - 2 (2) - 5
\ / l \ / l
60 - 4 - 5
\ / /
56 - 5 = 51