Factorise : 21x + 14 a) 7 (3x+2) b) 7 (2x+3) c) 3 (7x+5) d) 7 (3+2x)
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Answer:
a is answer
Step-by-step explanation:
as 7(3x+2)is 21x+14
21x+14=21x+14 so it is correct
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