Step-by-step explanation:
Since all coefficients are integers, we can apply the rational zeros theorem.
The trailing coefficient (the coefficient of the constant term) is 7" role="presentation" style="margin: 0px; padding: 0px; box-sizing: border-box; font-style: normal; font-variant: inherit; font-weight: normal; font-stretch: inherit; font-size: 16px; line-height: normal; font-family: inherit; display: inline; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">77.
Find its factors (with the plus sign and the minus sign): ±1" role="presentation" style="margin: 0px; padding: 0px; box-sizing: border-box; font-style: normal; font-variant: inherit; font-weight: normal; font-stretch: inherit; font-size: 16px; line-height: normal; font-family: inherit; display: inline; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">±1±1, ±7" role="presentation" style="margin: 0px; padding: 0px; box-sizing: border-box; font-style: normal; font-variant: inherit; font-weight: normal; font-stretch: inherit; font-size: 16px; line-height: normal; font-family: inherit; display: inline; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">±7±7.
These are the possible values for p" role="presentation" style="margin: 0px; padding: 0px; box-sizing: border-box; font-style: normal; font-variant: inherit; font-weight: normal; font-stretch: inherit; font-size: 16px; line-height: normal; font-family: inherit; display: inline; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">pp.
The leading coefficient (the coefficient of the term with the highest degree) is 2" role="presentation" style="margin: 0px; padding: 0px; box-sizing: border-box; font-style: normal; font-variant: inherit; font-weight: normal; font-stretch: inherit; font-size: 16px; line-height: normal; font-family: inherit; display: inline; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal;
