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- let a1=(1 -2 -5) a2= (2 5 6) and b=(7 4 -3). Determine whether b can be written as linear combination of a1 and a2Find (a) u − v, (b) 2(u + 3v), and (c) 2v − u. u = (0, 4, 3, 4, 4), v = (6, 8, −3, 3, −5)find the Bezout coefficients and write the gcd (243, 715) a s a linear combination of 243 and 715.