Question

(a + b - c )(a + b + c )

Answer 1

use the distributive law
first multiply the second parenthesis by a
then do the same with b and then -c
finally simplify like terms

Answer 2

so whats the answer Im on a timer

Answer 3

sorry we are not allowed to give direct answers Only guide people to the solution.

Answer 4

Distribute the a to the abc on the right
Then do the same for the B, distribute it to the ABC on the right
Then do the same for C, distribute it to the ABC on the right

Answer 5

Here's the hint: \[(a+b-c)(a+b+c) =(~(a+b)~-c)(~(a+b)~+c)\]