Answer:
a) 17
b) 45
Step-by-step explanation:
a) [tex]9+3 x 2^{2} - 1 x 4[/tex]
use pemdas first,
[tex]2^{2}\\[/tex] = 4
3x4 = 12
1x4 = 4
now the equation is [tex]9+12 - 4[/tex]
9+12 = 21
that makes the equation 21-4
21-4 = 17
a) 17
now for b
b)
the equation would then be [tex]9+3 x (2^{2} - 1) x 4[/tex]
so youd use pemdas as always
start in the parenthases
[tex]2^{2}[/tex] = 4
4-1 = 3
the equation is now [tex]9+3 x 3 x 4[/tex]
now, multiply 3x3x4
3x3 = 9
9x4 = 36
now the equation is 9+36
9+36 is 45
b) 45
hope this helped!
