Question

How much is `(-17x^6 - 6x^3 - 20x) + (-10x^4 + 9x^3 - 18)`?

Answer 1

Combining terms with identical exponents of `x` gives:
`color(white)("XXXX")` `-17x^6-10x^4+3x^3-20x-18`

Explanation:

`(-17x^6-6x^3-20x)+(-10x^4+9x^3-18)`

#{:(=, ,(-17x^6), , ), ( ,+, ,+,(-10x^4)), ( ,+, (-6x^3),+,(+9x^3)), ( ,+, (-20x), , ), (, +, ,+,(-18)) :}#

`= -17x^6-10x^4+3x^3-20x-18`