Q 1: Divide [(3a)^{3} + (3b)^{3}] by (3a+3b). None of these 9a^{2}9ab9b^{2} 9a^{2}+9ab+9b^{2} 9a^{2}9ab+9b^{2}

Q 2: If a+b = 8 and ab = 15, find the value of a^{3}+b^{3}. 152 153 159 157

Q 3: Find the value of (58)^{2} using formula. 3374 3354 3364 3384

Q 4: If a+b+c = 6 and a^{2}+b^{2}+c^{2} = 20, find the value of ab+bc+ca. 6 4 2 8

Q 5: If x  1/x = 3, find the value of x^{2}+1/x^{2} and x^{4}+1/x^{4}. 113 117 119 115

Q 6: If ab = 6 and ab = 91, find the value of a^{3}b^{3}. 1864 1874 1844 1854

Q 7: (6a7b)(6a+7b) = _____? (6a)^{2}+(7b)^{2} None of these (6a)^{2}(7b)^{2}

Q 8: If x + 1/x = 5, find the value of x^{2}+1/x^{2} and x^{4}+1/x^{4}. 537 527 547 567

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