SOLUTION: Please show me the steps to solve this: b-y(y4-b)-7 y=2 b=7. I get -18 but the answer says 38

Algebra ->  Expressions-with-variables -> SOLUTION: Please show me the steps to solve this: b-y(y4-b)-7 y=2 b=7. I get -18 but the answer says 38       Log On


   

Question 885612: Please show me the steps to solve this:
b-y(y4-b)-7
y=2 b=7.
I get -18 but the answer says 38
Found 2 solutions by josgarithmetic, richwmiller:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
b-y%28y4-b%29-7
-
y=2 and b=7
-
7-2%282%2A4-7%29-7
7-2%288-7%29-7
7-2%281%29-7
7-2-7
highlight%28-2%29

Did you copy the expression incorrectly?

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
b-y(y^4-b)-7
when y=2 b=7
7-2(2^4-7)-7
7-2(16-7)-7
7-2(9)-7
-18
Either you copied incorrectly or the answer key is wrong.