Part 1)
Part 2)
Step-by-step explanation:
Part 1) we know that
To put factor back into the square root, we have to put squared value
we have
Remember that
substitute in the expression above
Part 2) we have
Solve for x
That means----> Isolate the variable x
Multiply in cross
Apply distributive property
Group terms
Factor x left side
Divide by (2c-ab) both sides