Question

If x=1^2-2^2+3^2-4^2+5^2-6^2+.........+99^2-100^2
y=1^2+2^2+3^2+4^2+5^2+.........+49^2+50^2

Then 1^2+3^2+5^2+7^2+9^2+.........+99^2 is equal to?
^ is for square

Answer 1

Answer: x+4y

Step-by-step explanation:

Please see the attached explanation