Respuesta :

Here, we are given with ;

[tex]{:\implies \quad \sf (3x^{2}-7x)-(4x^{2}+6x)}[/tex]

Opening parentheses will yield;

[tex]{:\implies \quad \sf 3x^{2}-7x-4x^{2}-6x}[/tex]

Collecting like terms ;

[tex]{:\implies \quad \sf (3x^{2}-4x^{2})+(-7x-6x)}[/tex]

[tex]{:\implies \quad \sf -x^{2}-13x}[/tex]

Hence, the required answer is - x² - 13x

erza65

Answer:

[tex](3 {x}^{2} - 7x) - (4 {x}^{2} + 6x) \\ \longrightarrow \: \: 3 {x}^{2} - 7x - 4 {x}^{2} - 6x \\ \longrightarrow \: \: {3x}^{2} - {4x}^{2} - 7x - 6x \\ \longrightarrow \: \: - {x}^{2} - 13x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]

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