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How to factorise 121a^-1?plz show the working?

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  • How to factorise 121a^-1?plz show the working?


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Answer #1 | 23/07 2014 19:20
Itz not in the exponenet form its 121a square -1....itz not a raised to -1
Positive: 60 %
Answer #2 | 23/07 2014 23:47
121a² - 1 = 0 (11a-1)(11a+1) = 0 11a-1 = 0; then, 11a = 1; then, a = 1/11 11a+1= 0; then, 11a= -1; then, a = -1/11 ANSWER: a = -1/11, 1/11
Positive: 50 %
Answer #3 | 23/07 2014 16:47
121a² - 1 = 0 (11a-1)(11a+1) = 0 11a-1 = 0; then, 11a = 1; then, a = 1/11 11a+1= 0; then, 11a= -1; then, a = -1/11 ANSWER: a = -1/11, 1/11
Positive: 40 %
Answer #4 | 24/07 2014 02:20
Itz not in the exponenet form its 121a square -1....itz not a raised to -1
Positive: 25 %

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