Question

elimine os parenteses e reduza os termos semelhantes
a) (8x³+6x²+x-10) + (4x²-3x²+2x+4)
b) (10x³-8x²+2x-10) + (5x³-3x²+6x+5)
c) (11x³+6y²+x-10) + (x³-15y²+5x+4)
d) (2m+6y²+x-10) + (8m-3y²+2x+4)
e) (x³+16x²+x-10) + (-7x³-3x²+9x+4)

Answer 1

Agrupe os termos semelhantes para fazer a soma:

$a) (8x^3+6x^2+x-10) + (4 x^{2} -3 x^{2} +2x+4)\to \\\\ 8x^3+6x^2+x-10 + 4 x^{2} -3 x^{2} +2x+4\to \\\\ 8x^3+6x^2+4x^2-3x^2+x+2x-10+4\to \\\\ 8x^3+7x^2+3x-6$




$b) (10x^3-8 x^{2} +2x-10) + (5x^3-3 x^{2} +6x+5)\to \\\\ 10x^3-8 x^{2} +2x-10 + 5x^3-3 x^{2} +6x+5\to \\\\ 10x^3+5x^3-8 x^{2} -3 x^{2} +2x+6x-10+5\to \\\\ 15x^3-11x^2+8x-5$




$c) (11x^3+6y^2+x-10) + (x^3-15y^2+5x+4)\to \\\\ 11x^3+6y^2+x-10 + x^3-15y^2+5x+4\to \\\\ 11x^3+x^3+6y^2-15y^2+x+5x-10+4\to \\\\12x^3-9y^2+6x-6$




$d) (2m+6y^2+x-10) + (8m-3y^2+2x+4)\to \\\\ 2m+6y^2+x-10 + 8m-3y^2+2x+4\to \\\\ 6y^2-3y^2+2m+8m+x+2x-10+4\to \\\\ 3y^2+10m+3x-6$




$e) (x^3+16x^2+x-10) + (-7x^3-3x^2+9x+4)\to \\\\ x^3+16x^2+x-10 -7x^3-3x^2+9x+4\to \\\\ x^3-7x^3+16x^2-3x^2+x +9x-10+4\to \\\\ -6x^3+13x^2+10x-6$