How do you evaluate #-4[ 5+ ( 4- 7) ] #?

2 Answers

Answer:

#-8#

Explanation:

In this case, the order of operations:

Parenthesis
Exponents
Multiplication/Division
Addition/Subtraction

Would apply so:

#-4[5+(4-7)]#

Solve the most inner parenthesis first:

#-4[5+(-3)]#

Because of the negative we get:

#-4[5-3]#

We still have values in the parenthesis, so we must equate those first:

#-4[2]#

Then just multiply what you have left:

#-8#

Nov 9, 2017

First, solve the curve bracket [()]
#-4[5+(-3)]#
You must've learned in school that,
#(+) xx (-) = (-)#
Relying on that,
#-4[5-3]#
Solve
#-4[2]#
When there is no sign between a no. and a bracket, it means we have to multiply it,
#-4[2]=-4xx2#
It is easy to multiply it,
#-8#