What is the easiest way to solve this? X + √y = 11, √X + y = 7

by AmirhoseinRiazi   Last Updated August 13, 2018 14:20 PM

X + √y = 11

√X + y = 7

● What is the easiest way to solve this?

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From equation (1) we get

$$x=11-\sqrt{y}$$ and we get

$$\sqrt{11-\sqrt{y}}=7-y$$ now we can substitute $$\sqrt{y}=a$$ and you will get

$$\sqrt{11-a}=7-a^2$$ Can you proceed?

Dr. Sonnhard Graubner
August 13, 2018 14:19 PM