If x is a positive real number and x2-2- then x3-a 2b 22c 32d 4

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Standard XII

Accountancy

Sinking Fund

If x is a pos...

Question

If x is a positive real number and x² = 2, then x³ =

(a) $\sqrt{2}$

(b) 2 $\sqrt{2}$

(c) 3 $\sqrt{2}$

(d) 4

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Solution

We have to find provided. So,

By raising both sides to the power

By substituting in we get

The value of is

Hence the correct choice is .

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If x is a positive real number and x2 = 2, then x3 = (a) 2 (b) 22 (c) 32 (d) 4

We have to find provided. So, By raising both sides to the power By substituting in we get The value of is Hence the correct choice is .

If x is a positive real number and x² = 2, then x³ =

(a) $\sqrt{2}$

(b) 2 $\sqrt{2}$

(c) 3 $\sqrt{2}$

(d) 4

We have to find provided. So,

By raising both sides to the power

By substituting in we get

The value of is

Hence the correct choice is .