Question

add -8x^2+2y^2z-11 and -2x^2+9y^2z-1

Answer 1

Answer:

$( - 8x {}^{2} + 2y { }^{2} - 11) + ( - 2x { }^{2} + 9y {}^{2} - 1) \\ =( - 10x {}^{2} + 11y {}^{2} - 12)$

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