Prove that for all integers a and b. If
a^2(b^2 - 2b) is odd, then a and b are odd​

a²(b² - 2b) = a²b² - 2a²b

=> a²b² must be the odd (because an odd number minus an even number equals an odd number)

=> a and b are odd (proven)

add 5 subtract 1

step-by-step explanation:

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation