Question
If x + y + z = 6, and x3 + y3 +
z3 = 36, xyz = 6 then find (xy +yz + zx)?Solution
=> x3 + y3 + z3 – 3xyz = (x+y+z) (x+y+z)2 – 3(xy +yz + zx) => 36 – 18 = 6 (36 – 3(xy +yz + zx)) => 3 = 36 – 3(xy +yz + zx) => xy +yz + zx = 11
If A $ B means A X B, A € B means A ÷ B, A & B means A + B and A @ B means A - B, then what is the value of '178 & 100 € 25 @ 18 $ 4 & 22'?
...If ‘÷’ means ‘addition’, ‘+’ means ‘subtraction’, ‘-’ means ‘multiplication’, and ‘x’ means ‘division’, what will be th...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
48 * 495 * 5 * 2 * 120 = 126
If “+” means “minus”, “×” means “divided by”, “÷” means “plus”, and “-“ means then “multiplied by”
250 × 10 �...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
425 * 250 * 200 * ...
If '%' means (+), '#' means (-), '@' means ( X ), and '&' means (÷), then what is the value of the expression given below?
80 % 210 & 7 @ 9 # 124...- Which two signs should be interchanged to correct the given equation?
5 + 3 × 8 – 12 ÷ 4 = 3 Kim is standing to the right of Lana and to the left of Mini. Nia is standing to the left of Lana. Onyx is in the middle. All of them are standing in a ...
If P @ Q means P x Q, P ! Q means P + Q, P ? Q means P ÷ Q, and P ^ Q means P - Q, then what is the value of the following expression?
125 ? 25 ...
Select the correct combination of mathematical signs to replace (#) signs and to balance the given equation.
630 # 15 # 14 # 5 # 24 # 121
