Can someone help me! This is subtracting Polynomials.

(3x^2y+x^2-5xy^2)-(6xy^2-2y+7x^2)

Just tell me how to set up the equation.

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?