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No 3a

Asked by saketagarwal.dbl 4th January 2017, 3:31 PM
Answered by Expert
Answer:
begin mathsize 16px style Given space that space straight A equals open parentheses table row 1 1 row 8 3 end table close parentheses
Now comma space straight A left parenthesis straight A minus 4 right parenthesis equals AA minus 4 straight A equals straight A squared minus 4 straight A
space space space space straight A squared equals open parentheses table row 1 1 row 8 3 end table close parentheses open parentheses table row 1 1 row 8 3 end table close parentheses
rightwards double arrow straight A squared equals open parentheses table row cell left parenthesis 1 right parenthesis left parenthesis 1 right parenthesis plus left parenthesis 1 right parenthesis left parenthesis 8 right parenthesis end cell cell left parenthesis 1 right parenthesis left parenthesis 1 right parenthesis plus left parenthesis 1 right parenthesis left parenthesis 3 right parenthesis end cell row cell left parenthesis 8 right parenthesis left parenthesis 1 right parenthesis plus left parenthesis 3 right parenthesis left parenthesis 8 right parenthesis end cell cell left parenthesis 8 right parenthesis left parenthesis 1 right parenthesis plus left parenthesis 3 right parenthesis left parenthesis 3 right parenthesis end cell end table close parentheses
rightwards double arrow straight A squared equals open parentheses table row cell 1 plus 8 end cell cell 1 plus 3 end cell row cell 8 plus 24 end cell cell 8 plus 9 end cell end table close parentheses
rightwards double arrow straight A squared equals open parentheses table row 9 4 row 32 17 end table close parentheses
4 straight A equals 4 open parentheses table row 1 1 row 8 3 end table close parentheses equals open parentheses table row 4 4 row 32 12 end table close parentheses
So comma space straight A squared minus 4 straight A equals open parentheses table row 9 4 row 32 17 end table close parentheses minus open parentheses table row 4 4 row 32 12 end table close parentheses equals open parentheses table row cell 9 minus 4 end cell cell 4 minus 4 end cell row cell 32 minus 32 end cell cell 17 minus 12 end cell end table close parentheses equals open parentheses table row 5 0 row 0 5 end table close parentheses end style
Answered by Expert 4th January 2017, 3:43 PM
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