Question

$2b {}^{2} + 3a - 9b {}^{2} + b {}^{2}$
reduce términos semejantes ​

Answer 1

Respuesta:

$-6b^{2} +3a\\EXPLICACION$

$2b^{2} +3a-9b^{2} + b^{2} \\\\=2b^{2} +3a+-9b^{2} +b^{2} \\\\=2b^{2} +3a+-9b^{2} +b^{2} \\=(2b^{2} +-9b^{2} +b^{2} )+(3a)\\=-6b^{2} +3a$