Question

Add the following y2*,-3y2* and 7y2*​

Answer 1

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Answer 2

$= {y}^{2} + ( - 3 {y}^{2} ) + 7 {y}^{2}$

$= {y}^{2} - {3y}^{2} + {7y}^{2}$

$= - 2 {y}^{2} + 7 {y}^{2}$

$= 5 {y}^{2}$