Mathematics
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OpenStudy (baby_bear69):
http://prntscr.com/a2zozu Check this please ? (: @jhonyy9
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jhonyy9 (jhonyy9):
so b. and c. you see them right - yes ?
jhonyy9 (jhonyy9):
ok. but what is about a. ?
OpenStudy (baby_bear69):
yes
jhonyy9 (jhonyy9):
so than are you sure about a. ?
jhonyy9 (jhonyy9):
try rewriting it like a square
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jhonyy9 (jhonyy9):
like difference of two squares
jhonyy9 (jhonyy9):
do you can ?
OpenStudy (baby_bear69):
5x-10???
jhonyy9 (jhonyy9):
not is right
(5x)^2 = 25x^2
but there are different letters exponent - the 25 is right with 5 squared
jhonyy9 (jhonyy9):
and for the second term for 100 = 10^2 but there are not just 100 - yes ?
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OpenStudy (baby_bear69):
im still confused .-.
jhonyy9 (jhonyy9):
how is this exercise there exactly please ?
jhonyy9 (jhonyy9):
25h^8 -100j^4
yes ?
OpenStudy (baby_bear69):
so its A,B,C?
jhonyy9 (jhonyy9):
but i need you see how you prove that a. is sure right - ok. ?
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jhonyy9 (jhonyy9):
step by step
25=5^2
h^8 = ?
OpenStudy (baby_bear69):
10^2?
jhonyy9 (jhonyy9):
yes but with letters what you do ?
jhonyy9 (jhonyy9):
h^8 = ? is a square or not ?
OpenStudy (baby_bear69):
yes
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jhonyy9 (jhonyy9):
square of what ?
jhonyy9 (jhonyy9):
ok i will help you in this but the second term you need prove it alone that is square sure - ok. ?
jhonyy9 (jhonyy9):
so h^8 = (h^4)^2
yes ?
OpenStudy (baby_bear69):
yeah
jhonyy9 (jhonyy9):
ok so prove the 100j^4 = ?
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OpenStudy (baby_bear69):
10j^2?
jhonyy9 (jhonyy9):
yes but use please parentheses because 10 need being squared too not just how you have wrote there j - ok ?
jhonyy9 (jhonyy9):
so (10j^2)^2
OpenStudy (baby_bear69):
ohhh okay thank you!
jhonyy9 (jhonyy9):
np
was my pleasure
good luck
bye