Multiply
(u-5)(u+5)
simplify your answer
u^2-5u-5u-25?

Question

Multiply
(u-5)(u+5)
simplify your answer
u^2-5u-5u-25?

anonymous · Answer

@sleepyhead314

sleepyhead314 · Answer

very close
check the sign of one of the middle ones :)

anonymous · Answer

is it u^2+5u-5u-25?

sleepyhead314 · Answer

yes!

then just add like terms :)

anonymous · Answer

u^2-25? do the 2 5u cancel each other?

sleepyhead314 · Answer

yep!

u^2 - 25   is correct ^_^

this is a rule you can keep in mind for similar problems if you want
(a + b)(a - b) = a^2 - b^2

anonymous · Answer

awesome thank you :-) I have more also im sorry

sleepyhead314 · Answer

it's alright :)
I'm glad I can help you :D

academicgurusinc · Answer

Alright so this problem is talking about the difference of squares. Think of (a+b)(a-b) = a^2-b^2 .... here we have the similar case. So (u-5)(u+5)=u^2-25 as our final answer. If you found this helpful, I encourage to subscribe to our youtube channel ( https://www.youtube.com/channel/UCYiI7SmkU4_vhdSzKBWsifg), to stay current with all of our new videos. Regards, Academic Gurus Inc. Twitter (@Academic_Gurus) Facebook (AcademicGurusInc) Youtube (Academic Gurus Inc)