1) Which ofthe following is the common factor of 21 x²y and 35 xy²? a) 7 b) 7 xy c) xy d) None of these  2) Divide as directed: 5 (2x + 1) (3x + 5) ÷ (2x + 1) a) 5(3x + 5) b) (3x + 5) c) 5 d) 0 3) When we factorise an expression, we write it as a ______ of factors. a) product b) difference c) sum d) None of these 4) The common factor of 6a²b4c², 21a²b and 15a³ is a) 6a³ b) 3a³ c) 6a² d) 3a² 5) Which of the following is the common factor of 25a²b and 55ab²? a) 5ab b) 5ab² c) 5a²b

Math factorisation class8

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