Question

Tentukan akar persamaan
1.x²-1=0
2.4x²+4x+1=0

Answer 1

X²-1 = 0
(x + 1) (x - 1) = 0
x + 1 = 0
x= -1

x-1=0
x=1

4x²+4x+1=0(2x + 1) (2x + 1) = 0
2x + 1 = 0
2x = -1
x = -1/2

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