Mathematics 9th Class English Medium Unit 4 Online Test With Answers

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Mathematics 9th Class English Medium Unit 4 Online Test

Sr. # Questions Answers Choice
1 The prodcut of two polynomial is equal to the ..................of their H.C.F and L.C.M Sum Difference Product Quotient
2 The squiare root of x2 -6x +9 is x-3 x + 3
3 L.C.M.of a2-b2 and a4 -b4 is a2+b2 a2-b2 a4 -b4 a-b
4 L.C.M of 15 x 2 z, 45 x y2 and 30 yz2 is 90 xyz 90 x2 y2 z2 90 x3y3z3 15 x2 yz
5 H.C.F. of a2-b2 and a3 -b3 is a-b a+b a2 +ab+b2 a2-ab+b2
6 H.C.Fof a3 +b3 and a2-ab+b2 a+b a2-ab-b2 (a-b)2 a2 +b2
7 H.C.F.of m-2 and m2+m -6 is m+2 m+3 m2+m-6 m-2
8 H.C.F of 35 a2b2 and 20 a3b3 is 5 a2 b2 20 a 3 b3 35 a5 b5 5 ab
9 H.C.F. of x3 y -xy and x5y2-x2y5 is xy (x2-y2) xy(x-y) x2y2(x-y) xy(x3-y3)
10 Factors of x4 - 16 is (x-2)2 (x-2)(x+2)(x2+4) (x-2)(x+2) (x+2)2
11 (x+y)(x2-xy+y2)= x3-y3 x3+y3 (x+y)3 (x-y)3
12 Factors of 8x3 -y3 are (2x +y)(4x2+2xy-y2) (2x+y)(4x2 -2y +y2) (2x-y)(4x2-2xy+y2) (2x-y)(4x2 +2xy+y2)
13 Let 5 x2 - 17 xy - 12y2 = A x B if A = (x -4y) then B is. (5x+3y) (5x-3y) (5x+3y) (5x-4y)
14 What shod be added to complee the square of y4 +81 18 y2 -18y2 9 y2 18y
15 Find m so that x2 +8 x +m is a complete square. 8 -8 4 16
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