 Hello and welcome to the session. Today I'll help you with the following question. The question says simplify 7 m minus 8 and the whole square plus 7 m plus 8 and the whole square. Now let's move on to the solution. Consider the given expression 7 m minus 8 and the whole square plus 7 m plus 8 and the whole square. Now first we should find the value for this expression. Now consider the identity a minus b the whole square is equal to a square minus 2ab plus b square. Now consider the expression 7 m minus 8 and the whole square. Now this expression will be solved using the given identity. That is a minus b the whole square is equal to a square minus 2ab plus b square. Now in this case a is equal to 7m and b is equal to 8n. Now substituting this values in the given identity we have 7m minus 8n the whole square is equal to 7m the whole square minus 2 multiplied by 7m multiplied by 8n plus 8n the whole square. And so this is further equal to 49m square minus 112 mn plus 64n square. So 7m minus 8n the whole square is equal to 49m square minus 112 mn plus 64n square. Now we shall find the value for this expression. Now consider the identity a plus b the whole square is equal to a square plus 2ab plus b square. Now the given expression is 7m plus 8n the whole square. Now in this case we will consider a as 7m and b as 8n. Now substituting these values of a and b in the given identity we will find the value for this expression. So we have 7m plus 8n the whole square is equal to 7n the whole square plus 2 multiplied by 7m multiplied by 8n plus 8n the whole square. And this is further equal to 49m square plus 112 mn plus 64n square. That is the expression 7m plus 8n the whole square is equal to 49m square plus 112 mn plus 64n square. Now the given expression is 7m minus 8n the whole square plus 7m plus 8n the whole square. Now in this we will substitute the values of both the expression and this becomes equal to 49m square minus 112 mn plus 64n square plus 49m square plus 112 mn plus 64n square. Now minus 112 mn and plus 112 mn gets cancelled and we are left with 49m square plus 49m square. We are combining the like terms together plus 64n square plus 64n square. And this becomes equal to 98m square plus 128n square. So finally the given expression is simplified to 98m square plus 128n square. So our final answer is 98m square plus 128n square. So hope you enjoyed the session have a good day.