SOLUTION: Evaluation of a polynomial in one variable: Evaluate the expression b2 - 6b - 2 when b= -5

Algebra ->  Expressions-with-variables -> SOLUTION: Evaluation of a polynomial in one variable: Evaluate the expression b2 - 6b - 2 when b= -5       Log On


   

Question 170736: Evaluation of a polynomial in one variable: Evaluate the expression
b2 - 6b - 2
when b= -5
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
When nature calls, don't put her on speaker



b%5E2+-+6b+-+2 Start with the given expression.


%28-5%29%5E2+-+6%28-5%29+-+2 Plug in b=-5.


25-6%28-5%29-2 Square -5 to get 25.


25%2B30-2 Multiply -6 and -5 to get 30.


53 Combine like terms.


So %28-5%29%5E2+-+6%28-5%29+-+2=53 which means that b%5E2+-+6b+-+2=53 when b=-5