Question

Simplifique a expressão algébrica (3y+2)²–(y+3)²+(2y+3)²​

Answer 1

Oie, Td Bom?!

$= (3y + 2) {}^{2} - (y + 3) {}^{2} + (2y + 3) {}^{2}$

$= 9y {}^{2} + 12y + y - (y {}^{2} + 6y + 9) + 4y {}^{2} + 12y + 9$

$= 9y {}^{2} + 12y + 4 - y {}^{2} - 6y - 9 + 4y {}^{2} + 12y + 9$

$= 12y {}^{2} + 18y + 4$

Att. Makaveli1996