Help with number three i will mark brainleiest

Is the product of seventeen negative numbers, positive or negative ?

2a+7+4ahow many terms? how many variables? any like terms? yes noif yes, which ones? what are the coefficients? any constants? yes noif yes, which ones? simplify the expression by combining like terms and constants: how many terms now?

Yo y do yall have 2 stars that means yall wrong bro