Which operation is NOT closed for polynomials?
(x2 + 2x - 5)
(x + 3x + 1)
(x2 + 2x - 5)(4x2 + 3x - 6)
(x2 + 2x - 5) + (x2 – 5x + 1)
(2x2 + 2x - 5) - (x2 + 6x + 2)
the answer is A

now i kniw my abcs next time wont u sing with me

The answer is a hoped that

1) add 6 to 24, write the rest of the equation 10-2x= 30 subtract 10 from 30 2x=20 divide 20 by 2 and x=102) add 3 to -9 write the rest of the equation 4x+3=-6 subtract 3 from -6 4x=-9 x= -2.25  i don't know the rest sorry