Х 1 = Which one of the following is the solution set of the equation 1. {4} 2. {2} 3. {2,4} 4. {2,3} 5. None of the preceding 2 ? 2-X X-2 X-3
Which of the following statements is/are true? (a) 2V3= V12 (b) 45+ V20 - V125 = 0 V - (c) 1 2-13 2+73 1. Only (a) 4. Only (a) and (b) 2. Only (b) 5. (a), (b) and (c) 3. Only (c)
x+1 3 5 2 If we consider only those values of x for which the expression is defined, then + is (x + 1)2 "x2 – 1 equal to 3x2 – 3x+4 3x2 + 3x+3 3x2 + 3x+4 3х2 – 3х – 4 1. 2. 3. 4. (x - 1)(x+1) (x - 1)(x+1) (x - 1)(x+1) (x - 1)(x + 1)2 5. 3x2 + x-3 (x - 1)(x+1)
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