Question

what must be added to 2n^2-6n+5 to get 3n^2+2n-6​

Answer 1

Answer:

n² + 8n -11

Step-by-step explanation:

let the number which is required to be added be x.

for explanation see the above image

Answer 2

Answer:

${n}^{2} + 8n - 11$

Step-by-step explanation:

$( {2n}^{2} - 6n + 5) \: \: + \: \: \: {n}^{2} + 8n - 11 \\ \\ {2n}^{2} + {n}^{2} - 6n + 8n + 5 - 11 \\ \\ {3n}^{2} + 2n - 6$