Question

(ii) Subtract 4x2 – 2y2 from 3x2 + y2 - z2​

Answer 1

Answer:

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Step-by-step explanation:

$\: \: \: \: \: \: \: \: \: \: \: \: \: 3 {x}^{2} + {y}^{2} - {z}^{2} \\ - \: \: 4 {x}^{2} - 2y {}^{2} \\ ( - ) \: \: \: ( + ) \\ \: \: \: \: \: \: \: \: \: \: - - - - - - \\ \: \: \: \: \: \: \: \: - {x}^{2} + 3 {y}^{2} - {z}^{2} \\ \: \: \: \: \: \: \: \: - - - - - \\ \\ \implies {x}^{2} - 3 {y}^{2} + {z}^{2}$