1) Which of the following is the common factor of 25a²b and 55ab²? a) 5ab² b) 5a²b c) 5ab d) 5a²b² 2) Which ofthe following is the common factor of 21 x²y and 35 xy²? a) 7 b) xy c) 7 xy d) none of these 3) The product of (x – 7) (x + 2) is …………………… a) x² – 4x – 12 b) x² – 5x – 14 c) x – 5x – 14 d) x² – 4 – 14 4) the common factor of a^2m^4 and a^4m^2? a) a4m4 b) a2m2 c) a2m4 d) a4m2 5) The common factor 12y and 30 is a) 6 b) 12 c) 30 d) 6y. 6) The factorisation of 6x – 42 is a) 6(x – 7) b) 3(x – 7) c) 2(x – 7) d) 6(x + 7) 7) The factorisation of x²yz + xy²z + xyz² is a) xy(x + y + z) b) x²yz (x + y + z) c) xy²z (x + y + z) d) xyz² (x + y + z) e) xyz(x + y + z) 8) (5a+6)2= a) 25a2+ 36 b) 25a2- 36 c) 25a2+ 30a + 36 d) 25a2 + 60a +36 9) When we factorise an expression, we write it as________ of factors a) Sum b) Product c) Difference d) None of these 10) The factorisation of 12x+36 is a) . 12(x+3) b) 12(3x) c) 12(3x+1) d) x(12+36x)

Math class 8 factorisation 2

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