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Mathematics
mxddi3:

(9+5i)(9-5i)

mxddi3:

@jhonyy9

ohyhyh:

i put it in the calculator it says 106..

ohyhyh:

so prob 106?

XluisX:

it might be 121

mxddi3:

lol, uh well, if u can't explain the steps to me then plz don't answer

XluisX:

oh

XluisX:

i did mental math sorry :/

mxddi3:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @XluisX i did mental math sorry :/ \(\color{#0cbb34}{\text{End of Quote}}\) it's all good lol

ohyhyh:

i say 106 is safe. i did get the answer from google. but idk up to u

ramen:

No this isn't a calculator problem

ramen:

The variable i represents and imaginary number

mxddi3:

yeah ^

ramen:

*an

mxddi3:

well i learned them alr today but i'm just still confused on how to do it

ramen:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @ohyhyh i put it in the calculator it says 106.. \(\color{#0cbb34}{\text{End of Quote}}\) You actually got the right answer.

ramen:

But you need to know how right?

ohyhyh:

told yuh

ohyhyh:

but i respect needing an explanation

mxddi3:

wait so i think ik how andi thought you werent supposed to use a calculator for these seeing as they are complex (imaginary) numbers....

ohyhyh:

i just searched it up on google and it gave me that

ohyhyh:

on the calc

mxddi3:

yeah but imaginary numbers aren't supposed to be found with a calculator i thought

ohyhyh:

idrk. im doing 7th grade advanced so... your older

ramen:

Its 9^2 + 5^2 = 106 because the I variable cancels out.

ohyhyh:

prob smarter to lol

ramen:

I not the best at imaginary numbers lol so you can check in with other people if you need more clarification. Hope this helps though.

mxddi3:

so the -5 doesn't mean anything ? or are you talking ab -25i^2 and since i^2 is -1 then -25 * -1 is 25 and 81+25 is 106?

ohyhyh:

im out of answers. this is all the other guy

ohyhyh:

now haha

mxddi3:

i'll just ask dude lol, ty tho

ohyhyh:

np

ramen:

Ok sounds good. Sorry I couldn't help more

ohyhyh:

rip

jhonyy9:

(9+5i)(9-5i) use formula a^2 -b^2 = (a-b)(a+b) 9^2 - (-5i)^2 i^2 = -1 and (-5)(-5)= 25 => = -25 81 - (-25) = 81 +25 = 106 @mxddi3

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