program that solves quadratic equations

Author: jprogram

src/fundamentals/Algebra.java

@@ -1,5 +1,65 @@
 package fundamentals;
 
+import java.util.Scanner;
+
+/**
+ * Create a program that solves quadratic equations (ax2 + bx + c = 0) using Bhaskara's formula. 
+ * Use as an example a = 1, b = 12 and c = -13. Find the delta
+ * 
+ * Author: Jefferson Silva
+ * Date : 07/02/2024
+ * Last modified: 07/02/2024 
+ *
+ * Modifications:
+ * 
+ *  - v1.1.0 : Created program
+ *  
+ */
+
 public class Algebra {
+	
+	private static int getDelta(int a, int b, int c) {
+		return (b * b) - (4 * a * c);
+	}
+	
+	private static double getX1(int a, int b, int delta) {
+		return (-b + Math.sqrt(delta)) / (2 * a);
+	}
+	
+	private static double getX2(int a, int b, int delta) {
+		return (-b - Math.sqrt(delta)) / (2 * a);
+	}
+	
+	public static void main(String[] args) {
+		
+		Scanner input = new Scanner(System.in);
+		
+		System.out.println("Equation: ax² + bx + c = 0 \n");
+		
+		System.out.print("* Enter the value of a: ");
+		int a = input.nextInt();
+
+		System.out.print("\n* Enter the value of b: ");
+		int b = input.nextInt();
+
+		System.out.print("\n* Enter the value of c: ");
+		int c = input.nextInt();
+
+		int delta = getDelta(a, b, c);
+
+		System.out.printf("\nYour equation is: %dx² + %dx + %d = 0", a, b, c);
+		
+		System.out.println("\nThe delta is: " + delta);
+
+		double x1 = getX1(a, b, delta);
+
+		System.out.printf("\nThe x1 of the equation is: %.2f", x1);
+
+		double x2 = getX2(a, b, delta);
 
+		System.out.printf("\nThe x2 of the equation is: %.2f" ,x2);
+		
+		input.close();
+		
+	}
 }