Question

1²-2²+3²-4²+5²-6²+_ _ _ 97²-98²​

Answer 1

Step-by-step explanation:

1²-2²+3²-4²+5²-6²+_ _ _ 97²-98²

in the equation the odd number is positive and even number is negative

so the addition of odd number between 1 to 100 is= 2401

(2401)^2= 5764801

so the addition of even number between 1 to 100 is= -2450

(-2450)^2= 6002500

1²-2²+3²-4²+5²-6²+_ _ _ 97²-98²

= 5764801+6002500

= 11767301