Question

HELP Simplifique as expressões:

( x + 3 ) . ( x + 4 ) – 2 . ( x + 1 )

( y + 7 ) . ( y – 7 ) + ( y + 2 ) . ( y –
1 )

Answer 1

Resposta:

(x+3).(x+4)-2.(x+1)=x²+5x+10

(y+7).(y-7)+(y+2).(y-1)= y^4-51+1y

Explicação passo-a-passo:

(x+3).(x+4)-2.(x+1)

ײ+4x+3x+12-2x-2

x²+5x+10

(y+7).(y-7)+(y+2).(y-1)

y²-7²+y²-1y+2y-2

y^4-49+1y-2

y^4-51+1y