Which of the following is a linear equation (a) x2 + 2x =0 (b) 2x+5=0 (c) x3 + 3x +5 =0 (d) x4+5=0
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Answer:
b.
Step-by-step explanation:
Concept :
A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. The standard form of a linear equation in one variable is of the form Ax + B = 0. Here, x is a variable, and A and B are constants. The standard form of a linear equation in two variables is of the form Ax + By = C. Here, x and y are variables, and A, B and C are constants.
Hence only option "b" satisfies the above criteria of linear equation
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