Which of the following is a linear equation ?
Which of the following is a linear equation ?
A) 2x2 + 5 = 0
B) 4x + 5 = 1
C) 2xy + z = 5
D) All the above
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Which of the following is a linear equation ?
A) 2x2 + 5 = 0
B) 4x + 5 = 1
C) 2xy + z = 5
D) All the above