Respuesta :
7b^2
Plug in the value of 7 into the variable
7(7)^2
Evaluate exponents first (order of operations)
7(49)
Multiply
343
Final answer: 343
Plug in the value of 7 into the variable
7(7)^2
Evaluate exponents first (order of operations)
7(49)
Multiply
343
Final answer: 343