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Could someone tell me how to solve this problem (attached)?

Could someone tell me how to solve this problem (attached)?

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Grade:9

2 Answers

Arun
25757 Points
3 years ago
then assume a/ b = t (for simplicity in writing)
(t^3 + 2t)/ (2t^2 + 1) = 123/136
Now cross multiply and solve for t which is obviouslya/b
Vikas TU
14149 Points
3 years ago
Dear stuent 
136 t^3 + 272t^2 = 246t^2 + 123 
136 t^3 + 26t^2 -123 = 0 
Solve this the ans would be 
x1 = 0.90735
x2 = -0.54927 + i * 0.83371
x3 = -0.54927 - i * 0.83371
 
So , a/b = 9/10
Hope this help 

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