Assignment:
Q1. Simplify: (3x^2 + 7y + 4xy - x^2) - (10y + 2(2xy) -3y + 3x(x) -1)
Q2. Simplify: (10x + 15) divided by 5(x+3)
Q3. What is the area of a rectangle that has sides of (x+4) and 2(x+3)? Simplify.
Q4. Simplify: SR(15x^5) divided by SR(3x)
SR: square root
Q5. Solve: 9 + 3z + 4z = -21 + 2z - 5z
Q6. What number(s) is forbidden (undefined) for x to be for:
(2x^4 + 4x) divided by (x^3 + 27)
Provide complete and step by step solution for the question and show calculations and use formulas.