Grade 8 - Mathematics 7.51 Polynomials Review Test

Q 1: Find the value of (31)^{2} using formula. 941 961 971 951

Q 2: If x-1/x = 10, find the value of x^{3}-1/x^{3}. 1040 1030 1050 1060

Q 3: If x+1/x = 4, find the value of x^{3}+1/x^{3}. 54 56 52 58

Q 4: Find the product of (x-3)(x-5)(x+7). None of these x^{3}-x^{2}-41x+105 x^{3}-x^{2}-41x+105 x^{3}-x^{2}-41x+105

Q 5: Divide (x^{2}+7x+2) by (x+3). Quotient=(x-4) and Remainder=0 Quotient=(x+4) and Remainder=2 Quotient=(x+4) and Remainder=0 Quotient=(x-4) and Remainder=2

Q 6: Find the product (7x+2y)(7x-2y). 49x^{2}+4y^{2} None of these 49x^{2}-4y^{2} 49x^{2}-2y^{2}

Q 8: Find the product of (2x+2y+2z) (4x^{2}+4y^{2}+4z^{2}-4xy-4yz-4xz). None of these 8x^{3}+8y^{3}+z^{3}-24xyz 8x^{3}+8y^{3}-z^{3}-24xyz 8x^{3}+8y^{3}+z^{3}-12xyz

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