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Linear Equations — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsLinear Equations1 Mark
Question
Subtract:
$4 a^2+5 b^2-6 c^2+8 \text { from } 2 a^2-3 b^2-4 c^2-5 .$
✓

Answer

$2 a^2-3 b^2-4 c^2-5-\left(4 a^2+5 b^2 2-6 c^2+8\right)$
$=2 a^2-3 b^2-4 c^2-5-4 a^2-5 b^2+6 c^2-8$
$=2 a^2-4 a^2-3 b^2-5 b^2-4 c^2+6 c^2-5-8$
$=-2 a^2-8 b^2+2 c^2-13$

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