Question

5x-2x2-8, 8x2-7x-9, 3+7x2-2x​

Answer 1

$Required sum,</p><p>=(5x−2x2−8)+(8x2−7x−9)+(3+7x2−2x)</p><p>Collecting like terms,</p><p>=2x2+8x2+7x2+5x−7x−2x−8−9+3</p><p>=(−2+8+7)x2+(5−7−2)x+(−8−9+3)</p><p>=13x2−4x−14</p><p></p><p>$

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