Question: A) Determine if the equation ab + bc + ca = ab + bc +ca is valid. B) Determine if the equation (a + b)(b

A) Determine if the equation ab + bc + ca = ab + bc +ca is valid.

B) Determine if the equation (a + b)(b + c)(c + a) = (a + b)(b + c)(c + a) is valid.

C) Determine if the equation abc + abc + bcd + bcd + ad = abc + abc + bcd + bcd is valid.

D) Determine if the equation xy +xz + yz = xy + xz + yz is valid.

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