3. If x + y + z = 8 and xy + y2 + Zx = 20, find the value of x + y +z - 3xyz
4. If a + b + c = 9 and ab + bc + ca = 26, find the value of a + b + c-3abc
5. If a + b + c = 9 and a² + b + c = 35, find the value of a + b + c-3abc
guys please tell solution step by step please
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i dont know sorry I can't give the answer
mark as brainliest
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hlo how you and your family ☺☺
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