What is the length of r and t ?

Look at this expression. a3b3c a-3b-3c-1 which of the following is the simplest form of the expression above?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Solve the equation by completing the square. x^2+2x=17