Question

x5 - 2x3 + x + 7x5−2x3+x+7​

Answer 1

Answer:

$x^5-2x^3+x+7x^5-2x^3+x+7=8x^5-4x^3+2x+7$

Step-by-step explanation:

$x^5-2x^3+x+7x^5-2x^3+x+7$

$Group\:like\:terms$

$=x^5+7x^5-2x^3-2x^3+x+x+7$

$\mathrm{Add\:similar\:elements:}\:-2x^3-2x^3=-4x^3$

$=x^5+7x^5-4x^3+x+x+7$

$\mathrm{Add\:similar\:elements:}\:x^5+7x^5=8x^5$

$=8x^5-4x^3+x+x+7$

$\mathrm{Add\:similar\:elements:}\:x+x=2x$

$=8x^5-4x^3+2x+7$