Question

$subtract \: \: \: 2z {}^{2} \: + 3y {}^{2} - 6y2 \: \: \: from \: \: z {}^{2} - y {}^{2} + 2yz$
answer please friends ​

Answer 1

Answer:

This is the answer. Hope it helps.

Answer 2

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Answer:-

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Explanation:-

${2z}^{2} + {3y}^{2} - 6yz- ( {z}^{2} - {y}^{2} +2yz) \\ = {2z}^{2} + {3y}^{2} - 6yz- {z}^{2} + {y}^{2} - 2yz \\ = {z}^{2} + {4y}^{2} - 8yz$

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Remember!! :- When we have (-) outside the bracket, signs of the values in the bracket will change too.