Question

a soma do polinomio 7m-2a+7 e 4m+8a+2 é:

Answer 1

  7m - 2a + 7
+4m + 8a + 2
11m + 6a + 9

Answer 2

$(7m-2a+7)+(4m+8a+2)\to \\\\ 7m+4m-2a+8a+7+2\to \\\\ 11m+6a+9$