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if x+y-z=4 and x²+y²+z²=30, then find the value of xy-yz-zx
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HEY MATE HERE IS YOUR ANSWER
➡️ (x + y - z) ^2 = 4^2
➡️ x^2 + y^2 + z^2 = 2(xy - yz - xz) = 16
➡️ 30 + 2(xy + yz + zx) =
➡️ xy + yz + zx = - 7
Hope it will help you
@thanksforquestion
Hope
➡️ (x + y - z) ^2 = 4^2
➡️ x^2 + y^2 + z^2 = 2(xy - yz - xz) = 16
➡️ 30 + 2(xy + yz + zx) =
➡️ xy + yz + zx = - 7
Hope it will help you
@thanksforquestion
Hope
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