a) $(3x^2 + 2x - 1) + (2x^2 + 4x + 2)$

b) $(2x + y + 3) + (-5x + y - 1)$

Question

a) $(3x^2 + 2x - 1) + (2x^2 + 4x + 2)$

b) $(2x + y + 3) + (-5x + y - 1)$

Accepted Answer

{ "quality": "clear", "question_count": 2, "skills_matched": [ "step_cot", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Algebraic Expressions", "Polynomial Addition" ], "new_concepts": [], "current_concepts": [ "Algebraic Expressions", "Polynomial Addition" ] } ## Simplificar a primeira expressão polinomial $$ \begin{aligned} &(3x^2 + 2x - 1) + (2x^2 + 4x + 2) \ &= (3x^2 + 2x^2) + (2x + 4x) + (-1 + 2) \ &= 5x^2 + 6x + 1 \end{aligned} $$ ## Simplificar a segunda expressão polinomial $$ \begin{aligned} &(2x + y + 3) + (-5x + y - 1) \ &= (2x - 5x) + (y + y) + (3 - 1) \ &= -3x + 2y + 2 \end{aligned} $$ ## Question 1 $5x^2 + 6x + 1$ ## Question 2 $-3x + 2y + 2$ { "subject": "Mathematics", "question_type": "Free Response", "knowledge_point": [ "Mathematics", "Algebra", "Polynomial Addition" ] }

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Question

Explanation:

Simplificar a primeira expressão polinomial

Simplificar a segunda expressão polinomial

Answer:

Question 1

Question 2