Question

ayudenme:


a)(3x^2 + 5x + 6 )-(7x^2 + 2x +1)

b) -5x^2 + [ 3y-(4x^2 + 2y)]

plis. :)

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Answer 1

Respuesta:

HoLA!!

Explicación paso a paso:

(3x^2 + 5x+6)-(7x^2+2x+1)

(3x^2 + 5x +6) + (-7x^2 - 2x - 1)

=(3x^2 - 7x^2 )+(5x -2x)+(6-1)

=(3-7)x^2 + 5 (5-2)x+5

=-4x^2 + 3x + 5

B) -5x+[3y-(4x^2 + 2y)]

-5x^2 + [3y-(4x^2+2y)]=-5x^2+[3y-4x^2-2y]

=-5x^2 + 3y-4x^2 -2 y

=(-5x^2 - 4x^2)+(3y-2y)

=-9x^2+ y

Suerte!!