Solve bc-c^3 when b=8, and c=2.

solve da^2 when d=7, and a=4.​

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5