4/216^-2/3+1/256^-3/4+2/243^-1/5

Convert the following in p/q form: (i) 5.2 bar (ii) 23.43 bar (iii) 0.32 bar (iv) 0.123 bar

If x = 1/2-root3 find the value of x³-2x²-7x+5

if x = root3+1/2 find the value of 4x³ + 2x² -8x+7

Rationalize the denominator of 1/ (root 7+ root 6 - root 13).

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