i not sure if i did this right. help please :)
multiply using foil
(10+square root 6)(10-square root 3)
after using foil i got
100+17.32+24.49-4.24=137.57???

Question

i not sure if i did this right. help please :) 
multiply using foil
 (10+square root 6)(10-square root 3)
after using foil i got 
100+17.32+24.49-4.24=137.57???

anonymous · Answer

help @hartnn

anonymous · Answer

someone just help :/

anonymous · Answer

It is not correct

anonymous · Answer

ok can you help me and explain how to get the correct answer

anonymous · Answer

$$
\left(10+\sqrt{x}\right)
   \left(10-\sqrt{y}\right)=  100 + 10 \sqrt x  -10 \sqrt y - \sqrt {xy}
\

$$
Replace x by 3  and y by 6 and use your calculator.

anonymous · Answer

ok so that is the equation we use every time we have a problem like this?

anonymous · Answer

Yes, in my previous post x=6 and y=3

anonymous · Answer

is the answer 82.43

anonymous · Answer

No

anonymous · Answer

i plunged in the numbers why is it not working?

anonymous · Answer

how about 88.58

anonymous · Answer

$$
\sqrt 6=2.44949\
\sqrt 3= 1.73205\
\sqrt {18}= 4.24264\
$$

anonymous · Answer

ok well when i plugged in the x and ys this time i got 88.58

anonymous · Answer

100 + 10 (2.44949)  -10 (1.73205) - 4.24264=102.932

anonymous · Answer

ok so are you suppose to get the square root of 6 3 and 18 before you plug them in?

anonymous · Answer

Yes

anonymous · Answer

ok thank you for explaining that can you help me with one more question?

anonymous · Answer

Post is as a new problem and let me know when you do

anonymous · Answer

ok sounds good

anonymous · Answer

it is done on the top

anonymous · Answer

it is about the third from the top

anonymous · Answer

did you find it?