निम्नलिखित प्रश्न

Which of the following statements is correct?

I. If x = 12, y = –2 and z = –10, then x³ + y³

+ z³ = 720

In △ ABC, AB = AC. A circle drawn through B touches AC at D and intersect AB at P. If D is the midpoint of AC and AP = 2.5 cm, then AB is equal to:

If p = 40 - q - r and pq + r(q + p) = 432, then find the value of (p² + q² + r²).

If p = 34 - q - r and pq + r(q + p) = 289, then find the value of (p² + q² + r²).

If a = 901, b= 903, and c= 906, then find the value of a³ + b³ +c³ –3abc?

If (a² + 1/a²) = 27, then find the value of (a³ - 1/a³).

If x + y + z = 9 and (x² + y² + z²) = 21, then find the value of (xy + yz + zx)

If p = 24 - q - r and pq + r(q + p) = 132, then find the value of (p² + q² + r²).