power of a product property:states that if there is more than one factor in parenthesis, within exponent the parenthesis, then the exponent is distributed to every term in the parenthesis

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.