Question

1- Simplificar a expressão algébrica 5.(4x²-2)-(3x²-x+7) *

( )17x²-x-22
( )25x²-x+12
( )17x²+x +12
( )17x²-x+19
( )NDA

Answer 1

$\large\boxed{{\sf Letra ~\purple{E}}}$

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$\sf \purple5 \purple. \purple( \purple{4x}^ \purple{2} \purple- \purple2 \purple) \purple- \purple( \purple{3x}^ \purple{2} \purple- \purple x \purple+ \purple7 \purple) \\ \sf \purple{20x}^{ \purple2} \purple - \purple1 \purple0 \purple- \purple( \purple{3x}^ \purple{2} \purple- \purple x \purple+ \purple7 \purple) \\ \sf\purple{20x}^{ \purple2} \purple - \purple1 \purple0 \purple- \purple{3x}^ \purple{2} \purple+ \purple x \purple- \purple7 \\ \sf \purple{17x}^{ \purple2} \purple- \purple1 \purple0 \purple+ \purple x \purple- \purple7 \\ \sf \purple{17x}^{ \purple2} \purple- \purple1 \purple7 \purple+ \purple x \\ \large\boxed{{\sf \purple{17x}^{ \purple2} \purple + \purple x \purple- \purple1 \purple7 {}}}$