For the equation (2x - 2) (4x + 4)

I got 8x² - 8

Can you explain why this is correct or incorrect?

Dana painted a wall in her bedroom that is 10.5 feet tall and 23.5 feet wide. She used exactly 3 quarts of paint to cover the wall. How may square feet will 1 quart of paint cover?

6) Martha is going to make 2 batches of strawberry ice cream. Each batch of ice cream requires pint of strawberries. How many pints of strawberries will she need? 3 423 pints

A baker has 24 sesame bagels and 36 plain bagels to put into boxes each box must have the same number of each type of bagel what is the greatest number of boxes that the baker can make using all of the bagels?

What is the value of z for the equation fraction 1 over 2z = - fraction 3 over 4 + fraction 1 over 4z?

Is - 6.3 rational or irrational

Ian has a list of 3 visit on a road trip with some friends. He needs to finalize the plans for the trip. How many different orders can he plan to visit the cities

From a group of 8 people, including George and Nina, 3 people are to be selected at random to work on a certain project. What is the probability that the 3 people selected will include George but not Nina? A) 5/56 B) 9/56 C) 15/56 D) 21/56 E) 25/56

5 (2x+6) - 17+0+0+0+0+0+0+0

What type of number is 3 - 771? Complex number Question in Khan Academy

2T+2T-8+3+5k there is a 2 as an exponent on the 5k but I can't wright it so FYI