Question

AYUDA ES URGENTE, DOY CORONITA

Answer 1

Respuesta:

$a^{2}-(-7ab+(-b^{2}+(-a^{2}+3ab-2b^{2} ) )) \\\\a^{2}-(-7ab+(-b^{2}-a^{2}+3ab-2b^{2} )) \\\\a^{2}-(-7ab+(-a^{2}+3ab-3b^{2} )) \\\\a^{2}-(-7ab-a^{2}+3ab-3b^{2} ) \\\\a^{2}-(-a^{2}-4ab-3b^{2} ) \\\\a^{2}+a^{2}+4ab+3b^{2} \\\\+2a^{2}+4ab+3b^{2} \\\\+2a^{2}+3b^{2}+4ab$

Explicación paso a paso: