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VikaD [51]
3 years ago
12

Subtract -4a^2-2ab+9b^2 from 7a^2-3ab+5b^2

Mathematics
1 answer:
tresset_1 [31]3 years ago
7 0

{7a}^{2}  - 3ab +  {5b}^{2}  - ( -  {4a}^{2}  - 2ab +  {9b}^{2}) \\  =  {7a}^{2}  - 3ab +  {5b}^{2}   + {4a}^{2}   + 2ab + -  {9b}^{2}) \\ = {7a}^{2}   +  {4a}^{2}  -  3ab   + 2ab +   {5b}^{2}  -  {9b}^{2}) \\ =  {11a}^{2}  - ab -  {4b}^{2}

<u>Answer</u><u>:</u>

<u>{11a}^{2}  - ab -  {4b}^{2}</u>

Hope you could understand.

If you have any query, feel free to ask

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