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OpenStudy (arkay):
1. Find all the real square roots of -9/16 no real root -3/4 -3/4 and 3/4 81/256
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OpenStudy (welshfella):
what do you think the square root of -9 is?
OpenStudy (arkay):
3i? or is it -3
OpenStudy (welshfella):
can any real number give -9 when its multiplied by itself
OpenStudy (arkay):
no
OpenStudy (welshfella):
-3 *-3 = 9 not -9
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OpenStudy (arkay):
So it would be no real root?
OpenStudy (welshfella):
yes
OpenStudy (arkay):
Thank you!
OpenStudy (welshfella):
the imaginary number 3i is the square root of -9
OpenStudy (welshfella):
yw
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