Respuesta:
1) 8x^2+31
2)-14m^2+2mn+n^2+5n
Explicación paso a paso:
1) 6(x^2+4)-3(×^2+1)+5(×^2+2)
= 6x^2+24-3x^2-3+5x^2+10
= 8x^2+31
2) (m+n)^2 -5(3m^2-n)
= m^2 +2mn+n^2 -15m^2 +5n
=-14m^2 +2mn +n^2 +5n
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Respuesta:
1) 8x^2+31
2)-14m^2+2mn+n^2+5n
Explicación paso a paso:
1) 6(x^2+4)-3(×^2+1)+5(×^2+2)
= 6x^2+24-3x^2-3+5x^2+10
= 8x^2+31
2) (m+n)^2 -5(3m^2-n)
= m^2 +2mn+n^2 -15m^2 +5n
=-14m^2 +2mn +n^2 +5n