Question

what must be added to 2m²-3mn+3n² to g t 5m²+2mn-7n²​

Answer 1

Answer:

hope it helps you

Answer 2

Answer:

$\boxed{\bf 3m^2+5mn-10n^2 \ should \ be \ added }$

Step-by-step explanation:

$\text{let the number to be added be \bf 'x' } \\ \text{x should be added to }2m^2-3mn+3n^2 \ to \ get \ 5m^2+2mn-7n^2 \\\\ => x+2m^2-3mn+3n^2 =5m^2+2mn-7n^2 \\ => x = 5m^2+2mn-7n^2-[2m^2-3mn+3n^2] \\ => x = 5m^2+2mn-7n^2-2m^2+3mn-3n^2 \\=>x=3m^2+5mn-10n^2 \\\\ \bf So, 3m^2+5mn-10n^2 \ should \ be \ added \ to \ 2m^2-3mn+3n^2 \ to \ get \ 5m^2+2mn-7n^2 \\\\ => \boxed{\bf So, 3m^2+5mn-10n^2 \ should \ be \ added }$