Question

O polinômio correspondente ao resultado de 9x² – 3x + 6 – (– 2x² + 7x) é: * a) 11x² -10x + 6 b) 7x² – 10x + 6 c) -11x² + 10x + 9 d) 10x² + 10x – 9

Answer 1

$\mathsf{9x^2-3x+6-(-2x^2+7x)}\\\mathsf{9x^2-3x+6+2x^2-7x}\\\large\boxed{\boxed{\boxed{\boxed{\mathsf{11x^2-10x+6}}}}}$

$\huge\boxed{\boxed{\boxed{\boxed{\mathsf{\maltese~~Alternativa~~a}}}}}$