Question

multiply (z+6)(z-6)

Answer 1

z^2 -36

Answer 2

Use the FOIL technique. First Mulitply Z in the first expression and Z in the second getting Z ^2. Then mulitply Zin teh first expression with The -6 in teh second expression getting -6z. Then Mulitply the postive 6 in teh first expression with the first Z in the second expression = +6z. Lastly mulitply +6 and -6 = 36. Putting all this together, we get z^2 - 6z + 6z -36. We can eliminate the -6z and +6z which equals 0 givning us final answer of z^2 - 36.

Answer 3

z*2 -36 us formula a*2 -b*2 =(a-b)(a+b)