Best answer gets brainliest and 3 i need with this plz you
what is the first step to simplify the expression: [–23 – [5 · (2 – 4)]] ÷ 32
multiply 5 times 2.
square 3.
subtract 5 from 2.
subtract 4 from 2
which values for a and b make the statement (a + 2)(b – 9) = 0 true?
a = 2, b = -9
a = -2, b = 9
a = -2, b = -9
a = 2, b = 9
what is the first step to simplify the expression: [–23 – [5 · (2 – 4)]] ÷ 32
multiply 5 times 2.
square 3.
subtract 5 from 2.
subtract 4 from 2

Ok so remember
order of simplification
PEMDAS
parenthaseese
exponents
multiplicaton or division whichever comes first
addition or subtraction whichever comes first

ok so remmeber work from the left to right parenthasees first and work from inside to outer parenthasees

so first one

innermost parenthasees first so
first step is 2-4
subtract 4 from 2

second one
if xy=0 then assume x and y=0 so
(a+2)(b-9)=0
a+2=0
a=-2

b-9=0
b=9

so answe ris a=-2
b=9

third questions

innermost parenthaees first
subtract 4 from 2

ok
1. subtrac 4 from 2
2. a=-2, b=9
3. subtract 4 from 2

I'm not so sure because I tried solving this problem and I have:

15 & 8: equal 289 as final ans. 
14 & 7: equal 245 as final ans. 
13 & 6: equal 205 as final ans. 
12 & 5: equal 169 as final ans. 
11 & 4: equal 137 as final ans.