Implicit differentiation y^2 +4xy +x^2 = i need to know how the 4xy gets differentiated with product rule

Must read story will give if ! in “perseverance,” which theme is reflected in the lines, “life’s field will yield as we make it / a harvest of thorns or of flowers”? a: life is a field in which flowers and thorns will grow. b: accept what you are given, because you cannot change it. c: your life is the result of the work you put into it. d: working together people achieve their goals in life.

What is the definition of scathing? a. to assail with abusive language c. to deter by advice or persuasion b. bitterly severe, as a remark d. the west wind; a mild wind

Based on what you have read, write two or three sentences explaining what the point of view in the memoir allows readers to learn about helen keller.