If 2 times a number is decreased by 5, the principal square root of this difference is 4 less than the number. Find the number(s) What is the number? (Use a comma to separate answers as needed.)

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A: Let's simplify the  given expression.

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A: Note:- Since you have asked multiple question As per our policy, we will solve the first question…

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A: The objective is to draw the graph.

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A: The given matrices are; A=1564-4-3 and B=-6-3-5188

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A: Please see the below picture for detailed solution.

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A: This question can be solved using the concept of solution of system of equation.

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Q: QUESTION 7 Solve the Equation: x²-12x+39=0 1. (-5, 4) ○ 2.(-7,8) 3. (8,-4) ○ 4. (6, -5)

A: Topic = Algebra As per guidelines , At a time only one question can be answered.

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A: The factored form equation for Zachary’s flight is given by y=axx-6.To substitute your vertex point…