Question

06 - Simplifique a expressão (x - 3)2 - (x - 2)(x + 2) - (x + 1)2. por favor me ajuda ​

Answer 1

$\tt \left(x-3\right)^2-\left(x-2\right)\left(x+2\right)-\left(x+1\right)^2\\\\\\\tt =x^2-6x+9-\left(x-2\right)\left(x+2\right)-\left(x+1\right)^2\\\\\\\tt =x^2-6x+9-\left(x-2\right)\left(x+2\right)-\left(x^2+2x+1\right)\\\\\\\tt =x^2-6x+9-x^2+4-\left(x^2+2x+1\right)\\\\\\\tt =x^2-6x+9-x^2+4-x^2-2x-1\\\\\\\large \boxed{\boxed{\tt =-x^2-8x+12}}$