Explicación paso a paso:
a. (x+1)(x+4)
x × x + 4x + x + 4
x² + 4x + x + 4
x² + 5x + 4
b. (x+3)(x+2)
x × x + 2x + 3x + 3 × 2
x² + 2x + 3x +6
x² + 5x + 6
Entonces:
a - b
(x² + 5x + 4) - (x² + 5x + 6)
-2
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Explicación paso a paso:
a. (x+1)(x+4)
x × x + 4x + x + 4
x² + 4x + x + 4
x² + 5x + 4
b. (x+3)(x+2)
x × x + 2x + 3x + 3 × 2
x² + 2x + 3x +6
x² + 5x + 6
Entonces:
a - b
(x² + 5x + 4) - (x² + 5x + 6)
-2