Question

2x² + 5x – 6 when x = 3 I need help

Answer 1

`\bf \implies27`

Explanation:

`\bf \leadsto{2x }^(2) + 5x - 6 \\ \bf \leadsto 2 {(3)}^(2) + 5(3) - 6 \\ \bf \leadsto 2(9) + 15 - 6 \\ \bf \leadsto18 + 15 - 6 \\ \bf \leadsto18 + 9 \\ \bf \leadsto27`

Answer 2

27

Explanation:

`3^2 = 9\\2\cdot \:9+5\left(3\right)-6\\2 \cdot 9 = 18\\18+5\left(3\right)-6\\5 \cdot 3 = 15\\18+15-6\\18 + 15 = 33\\33 - 6 = 27\\= 27`