what is the answer of question 20?
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vridhi0310:
Answer is 8 u will subtract 2 from the last 72 and will get 64 then 8 then 64 then 8 then 64 and at the last 8. I think it's helpful
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Formulae for this type of questions is
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thnku
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hey mate here is your answer ✌♥✌
√(72-√(72-√(72-........ =X.......1
squaring
72-√(72-√(72-........ =x².......2
put 1 in 2
72-x=x²
x²+x-72=0
by splitting the middle term
x²+9x-8x-72=0
X(X+9)-8(X+9)=0
(X+9)(x-8)=0
X=-9 or X=8
but negative is rejected as the root of negative no. is not possible
so X=8
hope it will help you⛄⛄⛄
mark me brainliest ✌✌✌✌
√(72-√(72-√(72-........ =X.......1
squaring
72-√(72-√(72-........ =x².......2
put 1 in 2
72-x=x²
x²+x-72=0
by splitting the middle term
x²+9x-8x-72=0
X(X+9)-8(X+9)=0
(X+9)(x-8)=0
X=-9 or X=8
but negative is rejected as the root of negative no. is not possible
so X=8
hope it will help you⛄⛄⛄
mark me brainliest ✌✌✌✌
thnks
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