Question

Addition of a²+5ab-7b²,4b²+3a²+7a+6b,4ab-3+2b+5b² and 7-2b+a-2ab
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Answer 1

Answer:

$4 {a }^{2} + 7ab + 2 {b}^{2} + 8a + 6b + 4$

$4 {a }^{2} + 7ab + 2 {b}^{2} + 8a + 6b + 4$

Is the answer