Which expression is equivalent to this expression?
x(2x + 3)

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

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)