MHR • Advanced Functions 12 Solutions 660
MHR • Advanced Functions 12 Solutions 660
MHR • Advanced Functions 12 Solutions 660
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Chapter 7 Section 2 Question 7 Page 375<br />
a) (8 x ) 2 ! 2(8 x ) ! 5 = 0<br />
a = 1, b = !2, c = !5<br />
b) 8 x = !(!2) ± (!2)2 ! 4(1)(!5)<br />
2(1)<br />
8 x = 2 ± 24<br />
2<br />
8 x = 2 ± 4 " 6<br />
2<br />
8 x = 2 ± 2 6<br />
2<br />
8 x = 1± 6<br />
8 x = 1+ 6<br />
log8 x = log(1+ 6)<br />
x log8 = log(1+ 6)<br />
x =<br />
or<br />
log(1+ 6)<br />
log8<br />
8 x = 1! 6, not true<br />
c) 8 x = 1! 6<br />
<strong>MHR</strong> <strong>•</strong> <strong>Advanced</strong> <strong>Functions</strong> <strong>12</strong> <strong>Solutions</strong> 679