GERALD1712IN GERALD1712IN

Math

Answered

x² - 4 = 77

a.no real solution
b.9
c.9, -9
d.-9

Sagot :

CHRISTIANESPINOSAOFFIN CHRISTIANESPINOSAOFFIN

C

Solution:

x^2-4=77

x^2=77+4

x^2=81

x=9

x=-9

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