Grade 8 - Mathematics 7.51 Polynomials Review Test

Q 1: (6a-7b)(6a+7b) = _____? None of these (6a)^{2}-(7b)^{2} (6a)^{2}+(7b)^{2}

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

Q 3: If x-1/x = 10, find the value of x^{3}-1/x^{3}. 1050 1040 1060 1030

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

Q 5: Divide (a^{4}+a^{3}+6a^{2}+9a+7) by (a^{2}+a+2). Quotient=(a^{2}+4) and Remainder=(5a-1) Quotient=(a^{2}+4) and Remainder=(5a+1) None of these Quotient=(a^{2}-4) and Remainder=(5a-1)