Which expression is equivalent to (2x^5 + 7x^3) - (5x^2 - 4x^3)

What is the simplified form of 7 √x • 7 √x • 7 √x • 7 √x?

Harry’s soccer team plays 2 nonconference games for every 3 games that they play against conference opponents. if y represents the number of nonconference games and x represents the number of conference games, which equation best models this proportional relationship? a)y=2/3 x b)y=3/2 x c)y = 2x d)y = 6x

Which expression is equivalent to 2x^2+7x+4?