2-7 square roots & real numbers
TRANSCRIPT
5• Remember:
2
= 5 • 5Five
“squared”Equals five times 5 !!!Trog getting smart !!
Not feel sorry for self anymore!
The Square Root is just the opposite.
√16Means: What number times itself equals 16 ?
TROG KNOW!!2 times 8 equal 16 !!!!
So square root is 2 ! No wait…Square root is 8 !....no can’t be…Trog Confused!!!
OHHH! Trog get it!Square root of 16Is 4 !! ..because 4 times itself equal 16 !!
Sometimes you are to find the negative square roots of some numbers….
-√25
-√
-√
49
81
= -5
= -7
= -9
-√-√-√
9
4
36
= -3
= -2
= -6