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Factor completely.

2x^(2)+x-21
Answer:

Factor completely.\newline2x2+x21 2 x^{2}+x-21 \newlineAnswer:

Full solution

Q. Factor completely.\newline2x2+x21 2 x^{2}+x-21 \newlineAnswer:
  1. Identify Coefficients: Step Title: Identify the Coefficients\newlineConcise Step Description: Identify the coefficients of the quadratic equation, which are the numbers in front of the variables. In this case, the coefficients are 22, 11, and 21-21.\newlineStep Calculation: Coefficients are 22, 11, 21-21\newlineStep Output: Coefficients: 22, 11, 21-21
  2. Find Factors: Step Title: Find the Factors\newlineConcise Step Description: Find two numbers that multiply to the product of the first and last coefficients 2×21=422 \times -21 = -42 and add to the middle coefficient 11.\newlineStep Calculation: Factors of 42-42 that add up to 11 are 77 and 6-6 (because 7×6=427 \times -6 = -42 and 7+(6)=17 + (-6) = 1).\newlineStep Output: Factors: 77, 6-6
  3. Rewrite Middle Term: Step Title: Rewrite the Middle Term\newlineConcise Step Description: Rewrite the middle term using the factors found in the previous step.\newlineStep Calculation: The quadratic equation can be rewritten as 2x2+7x6x212x^2 + 7x - 6x - 21.\newlineStep Output: Rewritten Quadratic: 2x2+7x6x212x^2 + 7x - 6x - 21
  4. Factor by Grouping: Step Title: Factor by Grouping\newlineConcise Step Description: Group the terms into two pairs and factor out the common factors from each pair.\newlineStep Calculation: Group (2x2+7x)(2x^2 + 7x) and (6x21)(-6x - 21), then factor out the common factors. From the first group, we can factor out xx, and from the second group, we can factor out 3-3.\newlineStep Output: Factored Groups: x(2x+7)3(2x+7)x(2x + 7) - 3(2x + 7)
  5. Factor Out Common Binomial: Step Title: Factor Out the Common Binomial\newlineConcise Step Description: Factor out the common binomial from the two groups.\newlineStep Calculation: The common binomial is (2x+7)(2x + 7), so we factor it out to get the final factored form.\newlineStep Output: Factored Form: (x3)(2x+7)(x - 3)(2x + 7)