Hi guys,
Need some help with d in the 1st one and b and c in the second one
Workings and explanations would be helpful
![Hi guys Need some help with d in the 1st one and b and c in the second one Workings and explanations would be helpful class=](https://us-static.z-dn.net/files/d3d/b3b36f1298fcfd8e023b2cb88fb2a0d8.jpg)
![Hi guys Need some help with d in the 1st one and b and c in the second one Workings and explanations would be helpful class=](https://us-static.z-dn.net/files/d94/16490dcb9dc4042a6aad01272fa80e0d.jpg)