Question

Simplify [x2-2x+3] [x2-2x+5]-35

Answer 1

Answer:

$let \: {x}^{2} - 2x = y$

So given can be rewritten as

$(y + 3)(y + 5) - 35 \\ {y}^{2} + 3y + 5y + 15 - 35 \\ {y}^{2} + 8y - 20 \\ {y}^{?} + 10y - 2y - 20 \\ y(y + 10) - 2(y + 10) \\ (y + 10)(y - 2) \\ ( {x}^{2} - 2x + 10)( {x}^{2} - 2x - 2)$

Answer 2

Answer:

this is correct....................