if (a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ca then what os the value of (7x+3y+z)^2
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Answer:
49 x^2+9 y^2+z^2+42 xy+6 yz+14 zx
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( 7x+3y+z)^2
(7x)^2+ (3y)^2+ (z)^2 + 2×7x×3y + 2×3y×z + 2×z×7x
49x^2 +9y^2 +z^2 +42xy +6yz +14xz
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(7x)^2+ (3y)^2+ (z)^2 + 2×7x×3y + 2×3y×z + 2×z×7x
49x^2 +9y^2 +z^2 +42xy +6yz +14xz
HOPE ITS HELPS U
PLZ MARKS AS BRAINLIEST ANSWER............
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ravi268333:
hi dear
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