SOLUTION: 1. Solve the equation by completing the square. 2x2 - 5x - 12 = 0

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Question 790486: 1. Solve the equation by completing the square. 2x2 - 5x - 12 = 0

Answer by solver91311(24713) About Me  (Show Source):
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Completing the square:

Step 1: Add the additive inverse of the constant term to both sides.

Step 2: Multiply both sides by the reciprocal of the lead coefficient.

Step 3: Divide the 1st degree term coeficient by 2, square the result, and add that result to both sides. Combine terms in the LHS.

Step 4: Factor the resulting perfect square trinomial in the RHS.

Step 5: Take the square root of both sides, considering both positive and negative roots.

Step 6: Add the additive inverse of the RHS constant to both sides.















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