Greetings!
To simply this expression, we have to follow our Order of Operations using the mnemonic, PEDMAS:
P→ Parenthesis (Complete everything inside the brackets)
E→ Exponents
D→ Division
M→ Multiplication
A→ Addition
S→ Subtraction
Let's try to the simply the expression now:
[tex] =8^2-(7(4+5)) [/tex]
Complete the the addition within the innermost parenthesis:
[tex] =8^2-(7(9)) [/tex]
Multiply the terms within the parenthesis:
[tex] =8^2-(63) [/tex]
Find the exponent of 2 in 8:
[tex] =64-(63) [/tex]
Subtract the remaining terms:
[tex] =1 [/tex]
The Simplified form of this Expression is:
[tex] \boxed{=1} [/tex]
I hope this helped!
-Benjamin
