If 4+root 5 is a root of equation y2-8y+m = 0 where m is rational
Answers
Step-by-step explanation:
LHS of the given equation is:
rationalising the denominator, we have
RHS is
therefore
equating the rational and irrational parts from the both sides of the equation:
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student-nameAwesum answered this
146 helpful votes in Math, Class X
3+ root 7/3-root7
=(3+root 7)whole square /3 square-root 7 square
=3 square+ root7 square+2*3* root 7/9- root 49
=9+root 49+6 root 7/9-7
=9+7+6 root 7/2
=16+6 root 7/2
16+6root7/2 = a+b root7
a=16/2=8
b=6/2=3 جھنک سلام
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Answer:
Step-by-step explanation:
Since the root given is positive
so we will apply the rule
So,
-b+√b^2-4ac/2a= 4+√5
-(-8) +√64-4m/2=4+√5
8+√64-4m= 8+2√5
64-4m=20
4m=44
m=11.
Answer.