Question

add: a²+ 3ab- b² and a²+ 2ab+b²​

Answer 1

Answer:

2a²+5ab

Step-by-step explanation:

$\left[\begin{array}{ccc}a^{2} &3ab&-b^{2} \\+a^{2} &2ab&b^{2} \\2a^{2} &5ab&0\end{array}\right]$

Answer 2

Answer:

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Step-by-step explanation:

a² + 3ab - b²

a² + 2ab + b²

__________

2a² + 5ab

__________