Question

simplifique a expressao ( x-3)+(x+4) . (x+4) - (2x+7)

Answer 1

Simplifique a expressao

( x-3)+(x+4) . (x+4) - (2x+7)

(x - 3) + (x² + 4x + 4x + 16) - (2x + 7)

(x - 3) + (x² + 8x + 16) - (2x + 7)   olha o sinal

(x - 3) + (x² + 8x + 16) - 2x - 7

x - 3 + x² + 8x + 16  - 2x - 7   junta iguais

x² + x + 8x - 2x - 3 + 16 - 7 =

x² + 9x - 2x + 13 - 7 =

x² + 7x + 6  ( resposta)