Question

Evaluate the expression for p = -1
-38p2 - 78p

Answer 1

`- 38 {p}^(2) - 78p \\ p = - 1 \\ - 38 * { (- 1)}^(2) - 78 * - 1 \\ - 38 + 78 \\ = 40 \\ thank \: you`

Answer 2

Adding p = -1

`- 38( - 1) {}^(2) - 78( - 1) \\ - 38 * 1 - ( - 78) \\ ( - 38) - ( - 78) \\ - 38 + 78 \\ = 40`

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