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Add =7/9 + 3/-4Sub= -3/5 from 9/10 |
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Answer» Answer: This appears to be a way of finding a number a , which when added to x − 16 x RESULTS in a square of form ( x + b ) 2
We can WRITE x 2 − 16 x + a = ( x + b ) 2 as x 2 − 16 x + a = x 2 + 2 b x + b 2
Now comparing coefficients of SIMILAR terms 2 b = − 16 or b = − 8
and a = b 2 = ( − 8 ) 2 = 64 |
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