34.The equation 12x² + 4kx + 3 = 0 has real and equal roots, if
A)k = ±3
B)k = ±9
C)k = 4
D)k = ±2
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In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity
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