Question
x^2 - 4x - 5 = 0
61
likes303 views
Answer to a math question x^2 - 4x - 5 = 0
Eliseo
4.6110 Answers
1. Identify the coefficients:
- \( a = 1 \)
- \( b = -4 \)
- \( c = -5 \)
2. Calculate the discriminant:
b^2 - 4ac = (-4)^2 - 4 \times 1 \times (-5) = 16 + 20 = 36
3. Apply the quadratic formula:
x = \frac{-(-4) \pm \sqrt{36}}{2 \times 1}
x = \frac{4 \pm 6}{2}
4. Solve for \(x\):
- \(x = \frac{4+6}{2} = 5\)
- \(x = \frac{4-6}{2} = -1\)
Thus, the solutions are:
x = 5 x = -1
- \( a = 1 \)
- \( b = -4 \)
- \( c = -5 \)
2. Calculate the discriminant:
3. Apply the quadratic formula:
4. Solve for \(x\):
- \(x = \frac{4+6}{2} = 5\)
- \(x = \frac{4-6}{2} = -1\)
Thus, the solutions are:
Frequently asked questions (FAQs)
What is the quotient when the mixed number 3 1/2 is divided by the factored number 4×5×5?
+
Question: Determine the absolute extrema of the function f(x) = x^2 + 2x on the interval [-3, 2].
+
Question: Using the SOH CAH TOA rule, find the value of sinθ given that the adjacent side measures 9 units and the hypotenuse measures 15 units. (SOH CAH TOA)
+
New questions in Mathematics