Question

Calculați (x-3)la puterea a 2-a + (x+2)la puterea a 2-a -2(x+1)(x-1)
Va rog frumos!!!

Answer 1

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Answer 2

${(x - 3)}^{2} + {(x + 2)}^{2} - 2(x + 1)(x - 1)$
${x}^{2} - 6x + 9 + x {}^{2} + 4x + 4 - 2( {x}^{2} - 1)$
${x}^{2} - 6x + 9 + {x}^{2} + 4x + 4 - {2x}^{2} + 2$
$0 - 2x + 15$
$- 2x + 15$