Rewrite the quadratic equation x2 - 8x + 13 = 0 to the form (x - a)2 = b, where a and b are integers, to determine the a and b values.
Solution:
Given quadratic equation is x2 - 8x + 13 = 0
To bring it to the form (x - a)2 = b, we use the technique of completing the square.
Rewrite the equation x2 - 8x + 13 = 0
This is of the standard form ax2 +bx + c = 0
For completing the square, we follow these steps:
- Take the constant to the other side
- Find half of b and square it.
- Add it to both sides and complete the square using the known square algebraic identity.
Step 1: x2 - 8x = -13
Step 2: x2 - 8x + 42 = -13 + 42
Step 3: (x-4)2 = -13 + 16 [using the algebraic identity [(a - b)2 = a2 - 2ab + b2 ]
(x - 4)2 = 3
Comparing the above equation with (x - a)2 = b
Gives a = 4, b = 3
Rewrite the quadratic equation x2 - 8x + 13 = 0 to the form (x - a)2 = b, where a and b are integers, to determine the a and b values.
Summary:
The quadratic equation x2 - 8x + 13 = 0 to the form (x - a)2 = b, where a and b are integers, are determined as a = 4 and b = 3.
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