Question

reduza os termos semelhantes

a)3x + 5x -3b -2x +5b +7x

b) 9ײ - (9ײ -3× +3× -1)

c) 8y +4 - 6y - 4 +y² +10y +25 -5y²)

d) 3b + 3m -3p -4p +4m +4b

e) xa + xb +xa -xb +b - a -2b +a

f) 2x³ - 4x² - 2x - (2x² + 2x -x³)

Answer 1

semelhantes

a)
= 3x + 5x -3b -2x +5b +7x
= 8x + 5x + 2b
= 13x + 2b

b)
= 9ײ - (9ײ -3× +3× -1)
= 9x^2 - 9x^2+ 1
= 1

c)
= 8y +4 - 6y - 4 +y² +10y +25 -5y²
= 8y - 6y + 10y +y^2 -5y^2+ 25
= -4y^2 + 12y + 25


d)
= 3b + 3m -3p -4p +4m +4b
= 7b + 7m - 7p
= 7.(b+m-p)

e)
= xa + xb +xa -xb +b - a -2b +a
= 2xa - b

f)
= 2x³ - 4x² - 2x - (2x² + 2x -x³)
= 2x^3 + x^3 -4x^2 -2x^2 -2x -2x
= 3x^3 - 6x^2 - 4x