Answer:

Step-by-step explanation:
Given

Required
Determine 

Open bracket

Equate the equation to 0

Express 3 as 1 + 1 + 1

Collect like terms

Group each terms

Factorize (starting with the first bracket)












Express 0 as 0 + 0 + 0

By comparison



Solving for 
Take square root of both sides

Add 1 to both sides


Solving for 
Take square root of both sides

Subtract 1 from both sides


Solving for 
Take square root of both sides

Subtract 1 from both sides


Substitute the values of a, b and c in 



The equation would be ' y = 1/2x'
The photo of my working will be attached.
Answer:
D. b + a = c
Step-by-step explanation:
c – a = b
Add a to both sides.
c = b + a
b + a = c
Answer: D. b + a = c
Merry Christmas and a happy new year
The tens place will be where the zero is which the value would be 70 since the 7 is in the thousand place the value is 7,000