c) (9x2 – 5x + 2) - (7x2 – 3x – 7) -quita parentesis y reduce . me podeis alludar porfi - -
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Verified answer
Explicación paso a paso:
(9x²-5x+2)-(7x²-3x-7)=9x²-5x+2-7x²+3x+7=
=2x²-2x+9
Explicación paso a paso:
(9x² – 5x + 2) - (7x² – 3x – 7)
= 9x² – 5x + 2 - 7x² + 3x + 7
= 9x² - 7x² – 5x + 3x + 2 + 7
= 2x² - 2x + 9