Question

Add: 2c (d-c-a) and 2a (d-a-c)​

Answer 1

Step-by-step explanation:

Electronics comprises the physics, engineering, technology and applications that deal with the emission, flow and control of electrons in vacuum and matter.[1] It uses active devices to control electron flow by amplification and rectification, which distinguishes it from classical electrical engineering which uses passive effects such as resistance, capacitance and inductance to control current flow.

Answer 2

Answer:

- 2 a^2 - 2 c^2 + 2ad + 2cd - 4ac

Step-by-step explanation:

2c ( d - c - a )

= 2c ( d ) + 2c ( - c ) + 2c ( - a )

= 2cd - 2 c^2 - 2ac

2a ( d - a - c )​

= 2a ( d ) + 2a ( - a ) + 2a ( - c )

= 2ad - 2 a^2 - 2ac

2c ( d - c - a ) + 2a ( d - a - c )​

= 2cd - 2 c^2 - 2ac + 2ad - 2 a^2 - 2ac

= - 2 a^2 - 2 c^2 + 2ad + 2cd - 2ac - 2ac

= - 2 a^2 - 2 c^2 + 2ad + 2cd - 4ac