Question

when mulitply (sqrt8 -sqrt6)( sqrt8 + sqrt6) would this answer be right 1.994? simplify if possible????

Answer 1

The answer is actually 2

Answer 2

how did you get two

Answer 3

You should use the algebraic identity: (a + b)(a - b) = a^2 - b^2.

Answer 4

Use the difference of squares formula to find that

\[\Large (\sqrt{8}-\sqrt{6})(\sqrt{8}+\sqrt{6})=(\sqrt{8})^2-(\sqrt{6})^2=8-6=2\]


So \[\Large (\sqrt{8}-\sqrt{6})(\sqrt{8}+\sqrt{6})=2\]

Answer 5

correct

Answer 6

i just realized you round it ,sorry am i right though? was my answer at least close?

Answer 7

You were close but I'm not sure where you went wrong. Rounding won't always work

Answer 8

No, you didn't round it, the answer is two.

Answer 9

M-E-D-A-L?

Answer 10

thanks..........

Answer 11

thank you im looking at where i went wrong i think its when i times the two sqrts when i sqrt them i got the answer and that i think i dont know , but thanks again