Answer :
Answer:
(a) So first term will be [tex]-4x^3\ and\ last\ term\ will\ be -2[/tex]
(b) So first term will be [tex]2x^3\ and\ last\ term\ will\ be\ 9[/tex]
(c) So first term will be [tex]-2x^3\ and\ last\ term\ will\ be -12[/tex]
Step-by-step explanation:
We have to find the first and last term of the expression
(a) We have given expression [tex](2x^3-x^2-9x+7)+(11x^2-6x^3+2x-9)[/tex]
After addition it will be [tex]-4x^3+10x^2-7x-2[/tex]
So first term will be [tex]-4x^3\ and\ last\ term\ will\ be -2[/tex]
(b) We have given equation [tex](x-3)(2x+3)(x-1)[/tex]
After multiplication it will be
[tex]2x^3-5x^2-12x+9[/tex]
So first term will be [tex]2x^3\ and\ last\ term\ will\ be\ 9[/tex]
(c) We have given expression [tex](2x-3)(3x+5)-(x+1)(2x^2-6x+3)[/tex]
It can be written as [tex]6x^2+x-15-(2x^3-4x^2-3x-3)[/tex]
[tex]6x^2+x-15-(2x^3-4x^2-3x-3)=-2x^3+10x^2+4x-12[/tex]
So first term will be [tex]-2x^3\ and\ last\ term\ will\ be -12[/tex]