Write all of the numbers that round to 50

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

2x minus y equals 6, x plus y equals negative 3