Evaluation of expressions

If a2-3a+1=0, find

(i)a2+1/a2
(ii) a3+1/a3

Correct result:

x1 =  7
x2 =  7
y1 =  18
y2 =  18

Solution:


Checkout calculation with our calculator of quadratic equations.

x2=a22+1/a22=0.3822+1/0.3822=7
y1=a13+1/a13=2.6183+1/2.6183=18
y2=a23+1/a23=0.3823+1/0.3823=18

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