Question

Calcule os produtos ( terceira parte )

(x + 5 ) . ( x + 2 )=
(3x + 2) . (2x +1)=
(x + 7) . (x - 4) =
(3x + 4) . (2x - 1) =

Answer 1

$(x + 5).(x + 2) \\ {x}^{2} + 2x + 5x + 10 \\ {x}^{2} + 7x + 10 \\ \\ (3x + 2).(2x + 1) \\ 6 {x}^{2} + 3x + 4x + 2 \\ 6 {x}^{2} + 7x + 2 \\ \\ (x + 7)(x - 4) \\ {x}^{2} - 4x + 7x - 28 \\ {x}^{2} + 3x - 28 \\ \\ (3x + 4)(2x - 1) \\ 6 {x}^{2} - 3x + 8x - 4 \\ 6 {x}^{2} + 5x - 4$
espero ter ajudado