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Someone help me please how to solve this system

Someone help me please how to solve this system-example-1
User Seldridge
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Answer:

Explanation:

o solve the given system of equations:

1) 12x² + x² + x³ = 7

2) -3x¹ - 2x² + x³ = -6

3) 1 - x¹ - x² + x³ = -1

Step 1: Combine like terms and arrange the equations in standard form:

1) 13x² + x³ = 7

2) x³ - 3x¹ - 2x² = -6

3) x³ - x² - x¹ + 2 = 0

Step 2: Set up a system of equations by equating the left-hand sides of each equation to zero:

1) 13x² + x³ - 7 = 0

2) x³ - 3x¹ - 2x² + 6 = 0

3) x³ - x² - x¹ + 2 = 0

Step 3: Use a numerical method or algebraic techniques to solve the system of equations. In this case, it seems that an algebraic solution would be more appropriate.

Step 4: By examining the given equations, we can observe that the term x = 1 satisfies all three equations when substituted. Therefore, x = 1 is a solution to the system of equations.

Step 5: To verify that x = 1 is the only solution, we can use long division or synthetic division to divide the polynomial (x - 1) into the given equations. If the division results in a quotient of zero, it confirms that x = 1 is the only solution.

Using long division or synthetic division, we find that (x - 1) is a factor of all three equations. Dividing the equations by (x - 1) results in a quotient of zero for each equation.

Therefore, the solution to the given system of equations is x = 1.

User Herman Starikov
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