Question

Simplifique as expressões

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

3x.(x-1)+(x+2).(x+5)

Answer 1

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

x²+4x+3x+12 -2x-2=

x²-7x-2x+10=

x²-9x+10


3x²-3x + x²+5x+2x+10=

4x²-3x+7x+10=

4x²+4x+10