A) 50 m
B) 20 m
C) 26 m
D) 39 m
Correct Answer: D
Solution :
(d): \[{{(5x+4)}^{2}}=9{{(2x-1)}^{2}}\Rightarrow 5x+4=\pm \,3(2x-1)\] \[\Rightarrow 5x+4+6x-3=0\] Or \[5x+4+6x+3=0\] \[\Rightarrow 11x=-1\] Or \[5x+4-6x+3=0\Rightarrow -x+7=0\Rightarrow x=7\]You need to login to perform this action.
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