Math

QuestionRewrite the equation x224x+5x^{2}-24 x+5 as (x+a)2+b(x+a)^2 + b by completing the square, with aa and bb as integers.

Studdy Solution

STEP 1

Assumptions1. The given quadratic equation is x24x+5x^{}-24 x+5. . We need to rewrite it in the form (x+a)+b(x+a)^ + b where aa and bb are integers.
3. We will use the method of completing the square to achieve this.

STEP 2

The general form of a quadratic equation is x2+2bx+cx^{2} +2bx + c. To rewrite the given equation in the form (x+a)2+b(x+a)^2 + b, we need to make the coefficient of xx half of its current value. This can be achieved by dividing the coefficient of xx by2.
a=242a = -\frac{24}{2}

STEP 3

Calculate the value of aa.
a=242=12a = -\frac{24}{2} = -12

STEP 4

Now, we substitute aa into the equation (x+a)2(x+a)^2 to get (x12)2(x-12)^2. However, this is not our final equation. We need to subtract the square of aa from the constant term in the original equation to find bb.
b=a2b = - a^2

STEP 5

Substitute the value of aa into the equation to find bb.
b=5(12)2b =5 - (-12)^2

STEP 6

Calculate the value of bb.
b=5144=139b =5 -144 = -139

STEP 7

Now, we substitute aa and bb into the equation (x+a)2+b(x+a)^2 + b to get our final equation.
(x12)2139(x-12)^2 -139So, the quadratic equation x224x+5x^{2}-24 x+5 can be rewritten as (x12)2139(x-12)^2 -139 by completing the square.

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