Answer:
x = 1, x = -1
Step-by-step explanation:
-4x² = -4
x² = 1
x =
x = ±1
Marci measured an angle in the intersection of two walkways in a city park as 115°. What is the value of s?
2 answers:
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9514 1404 393
Answer:
x^2 -4x +2 = 0
Step-by-step explanation:
The other root is the conjugate of the given one, so is 2-√2. The quadratic equation in factored form is then ...
(x -2-√2)(x -2+√2) = 0
Expanding this, we get ...
(x -2)^2 -(√2)^2 = 0
x^2 -4x +4 -2 = 0
x^2 -4x +2 = 0 . . . . the equation you're looking for
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