Pre algebra problem solve it

b( a + b )+ a; use a=9, and b = 4

The answer to the following question is 61

52

Step-by-step explanation:

b(a+b) is equal to 4(9+4)

then you want to multiply 4x9 and 4x4

4x9=36   and    4x4=16

then add 36 and 16 you get 52

or

b(a+b) is equal to 4(9+4)

add 9+4

9+4=13

then you get 4(13)

multiply 4x13 and you will get 52

4x13=52

triangle and cube

step-by-step explanation: