System.out.println("To make them unequal enter a index and coefficent to change:");
        int index=keyb.nextInt();
        input=keyb.nextDouble();
        poly2.coefficients[index]=input;
        System.out.println(poly2.coefficients[index]);
        System.out.print("Polynomials are equal: "+poly1.equals(poly2));
    }
}