Can someone simplify these 4 equations 1. 3mn4 + 6mn4
2. 12g2 − 7g2
3. −11c4d + 12c4d
4. 42z3 − 15z3

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.