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Middle School Mathematics  VII1. Factorize the following using the expansion formulaes: (b) (c) (d) (e) 5. Find the quotient and remainder, if any, when is divided by (x2). 6. The area of a square is 4x²12x+9. Find the perimeter of the square in terms of x. 7. Using division, state whether (x3) is a factor of x²+2x15. 8. Solve: 9. Solve: 10. Solve: 11. The sum of two numbers is 5040. If 10% of one number is equal to 8% of the other number, find the numbers. 12. One of the angles of a triangle is equal to the sum of the remaining two angles. If the ratio of thse two angles is 4:5, find the angles of the triangle. 13. Stephen and Neil can together finish a piece of work in 10 days. Stephen alone can do it in 15 days. 14. A, B, and C together can complete a work in 8 days. A and B can do the same work separately in 20 days and 24 days respectively. In how many days can C complete the work alone? 15. Two inlet pipes fill up the swimming pool in 10 hours and 15 hours respectively. An outlet pipe can empty the pool in 8 hours. If all the pipes are turned on together, in how much time will the empty pool be filled up completely? Character is who you are when no one is looking. 