B. Solve real life problems using formula given. (Show complete solution)

1. Mr. Rayvie plans to install am air conditioner on his room's square-shaped wall. He asked a carpenter to make a square opening on the wall where the air conditioner will be installed. The square opening must have an area of 13 inches. Suppose the area of the remaining part of the wall after the carpenter has made the square opening is 36 inches. (Use extracting square roots)

C. Determine the nature of the roots of the following quadratic equations using the discriminant. Place your answer inside the box. Provide answer sheet. (Show your complete solution)​