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Mathematics
Angelo
4 August, 07:22
Y^4 equals 16 if y is 2.
true
false
+2
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2
)
Dallas Lamb
4 August, 09:32
0
True.
2^2 is 2x2x2x2
2x2 = 4
4x2 = 8
8x2 = 16
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Gilmore
4 August, 10:09
0
Hello:
false because : Y^4 = 16 ... Y^4 - 16 = 0
(y²) ²-4² = 0 ... (1)
bu identity : a²-b² = (a+b) (a-b
(1) equi : (y²-4) (y²+4) = 0
but : y²-4 = y²-2² = (y+2) (y-2) = 0
y+2=0 or y-2=0
y=2 or y = - 2
y²+4 = 0 ... y²=-4 no solution in R
conclusion 2 solutions : - 2 and 2
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