Question

What's the awnser to 1/2(4×5)- 2³=

Answer 1

2

Explanation:

To simplify the expression we use PEMDAS.

`(1)/(2)(4\cdot5)-2^3`

first we evaluate he parenthesis to get

`(1)/(2)\cdot20-2^3`

then the exponents

`(1)/(2)\cdot20-8`

then multiplication

`10-8`

and finally, the subtraction

`10-8=2`

Hence,

`(1)/(2)(4\cdot5)-2^3=2`

which is our answer!