ans to these polynomials

[tex]9 {x}^{2} + 5x \: \: 6 {x}^{2 } - 2x[/tex]

[tex]11ab +7 {a}^{2} ( - 16ab + 11 {a}^{2} )[/tex]


[tex]2a + b \: \: \: 6 {a }^{2} - 7a \: - b[/tex]

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