Let z = ln(x 2 + y), x = ret . and y = ter . use the chain rule to compute ∂z ∂r and ∂z ∂t at the point where (r, t) = (1, 2).\

Apolynomial has two terms. check all of the factoring methods that should be considered. common factor difference of cubes sum of cubes difference of squares perfect-square trinomial factoring by grouping