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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def spheres_intersect(ar, aR, br, bR):
 """Return whether or not two spheres intersect each other. Parameters ar, br: array-like, shape (n,) in n dimensions Coordinates of the centres of the spheres `a` and `b`. aR, bR: float Radiuses of the spheres `a` and `b`. Returns ------- intersecting: boolean True if the spheres intersect. """

    return vector.vector_mag_sq(ar - br) < (aR + bR) ** 2