Question

add the following algebraic expression :-
1) 5x² + 7y-8, 4y+7-2x² and 6-5y + 4x2
(please answer this fast I need it now)
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Answer 1

Answer:

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Answer 2

Answer:

$5 {x}^{2} + 7y - 8 + 4y + 7 - 2 {x}^{2} + 6 - 5y + 4 {x }^{2} \\ = 5 {x}^{2} - 2 {x}^{2} + 4 {x}^{2} + 7y + 4y - 5y - 8 + 7 + 6 \\ = 7 {x}^{2} + 6y + 5$