Do you know how to solve this
(2x + 4)(x + 3)

What is the missing constant term in the perfect square that starts with x^2 -20x

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?