Resposta :
[tex] = (4x {}^{2} - 7x + 10) + (3x {}^{2} + 4x - 9) \\ [/tex]
[tex] = 4x {}^{2} - 7x + 10 + 3x {}^{2} + 4x - 9 \\ [/tex]
[tex] = 7x {}^{2} - 7x + 10 + 4x - 9 \\ [/tex]
[tex] = 7x {}^{2} - 3x + 10 - 9 \\ [/tex]
[tex]\boxed{ = 7x {}^{2} - 3x + 1 } \\ [/tex]
Att. NLE Top Shotta