3 years ago

Which expression is equivalent to 50 – 40 - 2?

Mathematics

1 answer:

Virty [35]3 years ago

3 0

Answer: = 8

Step-by-step explanation: Hope this help :D

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

tresset_1 [31]

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

Answer:

${11a}^{2} - ab - {4b}^{2}$

Hope you could understand.

If you have any query, feel free to ask

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3 years ago

Which expression is equivalent to 50 – 40 - 2?​

Which expression is equivalent to 50 – 40 - 2?