Respuesta:
1. x3-6x2+4x 2. -6m2+9mn 3. bd2+7ab-2a2
Explicación paso a paso:
1. (x3-x2+6)-(5x2-4x+6)
x3-x2+6-5x2+4x-6
x3-6x2+4x
2. (-5m2-n2+6mn)-(m2-n2-3mn)
-5m2-n2+6mn-m2+n2+3mn
-6m2+9mn
3. (-5b2+8ab+a2)-(3a2+ab-6b2)
-5b2+8ab+a2-3a2-ab+6b2
bd2+7ab-2a2
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Verified answer
Respuesta:
1. x3-6x2+4x 2. -6m2+9mn 3. bd2+7ab-2a2
Explicación paso a paso:
1. (x3-x2+6)-(5x2-4x+6)
x3-x2+6-5x2+4x-6
x3-6x2+4x
2. (-5m2-n2+6mn)-(m2-n2-3mn)
-5m2-n2+6mn-m2+n2+3mn
-6m2+9mn
3. (-5b2+8ab+a2)-(3a2+ab-6b2)
-5b2+8ab+a2-3a2-ab+6b2
bd2+7ab-2a2