Answer :
Final answer:
To solve the expression 9*3^2*2-1*4 to equal 45, group the terms as 9*(3^2)*(2-1)*4 = 9*9*1*4 = 324.
Explanation:
To place grouping symbols in the expression 9*3^2*2-1*4 to get a value of 45, we need to group the terms as 9*(3^2)*(2-1)*4 = 9*9*1*4 = 324. The expression changes to 324 instead of 45.