Question

Please answer the question.Tommorow is my Exam.​

Answer 1

Answer:

maths

Step-by-step explanation:

b hu by CVhhshshjshshevdvhhbbsbhijwhhhi

Answer 2

Answer:

180

Step-by-step explanation:

$x + y + z = 15 \\ square \: both \: side \: we \: get \\ = > {x}^{2} + {y}^{2} + {z}^{2} + 2(xy + yz + zx) = 225 \\ = > 83 + 2(xy + yz + zx) = 225 \\ = > xy + yz + zx = (225 - 83) \div 2 \\ = > xy + yz + zx = 71 \\ \\ {x}^{3} + {y}^{3} + {z}^{3} - 3xyz \\ = (x + y + z)( {x}^{2} + {y}^{2} + {z}^{2} - xy - yz - zx) \\ = 15(83 - 71) \\ = 15 \times 12 \\ = 180$