Math, asked by agya, 1 year ago

2x²+5y²-7z² from - 8x²-2y²+9z²

agya: Answer is - 10x²-7y²+16z² how

Answers

Answered by Vaishnavi20042003

-8x^2+2y^2+9z^2
-2x^2+5y^2-7z^2
+ - +
= -6x^2-3y^2+16z^2
hope it helps you

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agya: but the answer is -10x²-7y²+16z² how? irritating

agya: Ya I try to solve it more than 5times but no

agya: -10x²+7y²+16z²

agya: may be the question or the answer is wrong

Answered by hyunxu

HOLA!!

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LEMME HELP YOU :D

SOLUTION

= - 8x^2 -2y^2 + 9z^2 -(2x^2 +5y^2-7z^2)

= -8x^2-2y^2+9z^2 -2x^2-5y^2+7z^2

= -8x^2-2x^2-2y^2-5y^2+9z^2+7z^2

= -10x^2-7y^2+16z^2

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HOPE IT HELPS YOU :D

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