Question

Given that a is root of equation x2-x-3is equal to 0then a3+1/a5-a4-a3+a2is equal to

Answer 1

Answer:

Step-by-step explanation:

X^2-x-3=0

a=1,b=-1,c=-3

b^2-4ac=1+12=13

1+root13 whole /2 is a root and 1- root 13 whole by 2 is another root.

roots are 4.6 and -2.6.

98.336/1535.7 = 0.064 is one answer

other answer is using -2.6.

-16.58/-62.3

answer is 0.2661

there is a difference of 0.2 in both answers because of the roots,

generally in quadratic rule we take +ve root as our Quadratic root,

hence the answer 0.064 is right.

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