Q 60 If (z + x z) = 6/25, then determine the value of z.
Ops: A. 02/25
B. 1/25
C.
115
D. 2/5
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Answer:
HeÿA MäTè ❤❤
u² + u = 6/25
u² + u + 1/4 = (25+24)/100 = 49/100
(u+1/2)² = 49/100
u + 1/2 = ±7/10
u = (-5±7)/10 = -12/10, 2/10
√z = -12/10, 2/10
z = 144/100, 4/100
z = 36/25, 1/25
z = 1/25
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