The problem
Click to see the original problem
How do you arrive at the last step. Are you multiplying the step above it by (-1)? Thanks
Answer provided by our tutors
We are using the fact that:
-d^2 - a^2 = (-1)(d^2 + a^2)
so
How do you arrive at the last step. Are you multiplying the step above it by (-1)? Thanks
We are using the fact that:
-d^2 - a^2 = (-1)(d^2 + a^2)
so
| ← Previous Problem | Next Problem → |