solve the quadratic equation 2x^2+ax-a^2=0 for x

1. the taxi charges in Hyderabad are fixed along with the charge from the distance covered up to 3 kilometres you will be charger app certain minimum amount from the from there onwards you have to pay additional e for every kilometre travelled for the first 10 kilometre the charges paid is 166 journey of 15 kilometre the charge paid is256 rupees what are the charges and charge per kilometre

• Side AB and AC and median AD of triangle ABC are respectively proportional to did PQ and  PR and median PM of another triangle PQR show that ΔABC~ΔPQR. 

3 root 2-5 is irrational

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It x+in=a+ib÷a-ib then prove that x2+y2=1

1. Class11 Maths ch,7

Why 4 is saperated to    3 1

Surface area of hemisphere 13.8