Question

termine m de modo que x = 9 seja raiz da equação (6m - 1)x+ - (2m + 5)2 +3 - 0​

Answer 1

$\mathsf{(6m-1).9-2(2m+5)+3=0}\\\mathsf{54m-9-4m-10+3=0}\\\mathsf{50m=10+9-3}$

$\mathsf{50m=16}\\\mathsf{m=\dfrac{16\div2}{50\div2}}\\\large\boxed{\boxed{\boxed{\boxed{\mathsf{m=\dfrac{8}{25}}}}}}$