Himeviz
Himeviz
Math
Answered
(s-4)^2-81=0
by extracting equare roots
Sagot :
AnneCviz
AnneCviz
(s-4)² -81 = 0
(s-4)² = 81 ––> get the square root of both sides
s - 4 = ±9
s = ±9 +4
(use +9)
s = 13
; (use -9)
s = -5
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