yummyGggg yummyGggg
  • 04-08-2017
  • Mathematics
contestada

What is the correct expansion of (3x-2)(2x^2+5)

Respuesta :

jessla314
jessla314 jessla314
  • 04-08-2017
3x*2x^2=6x^3
3x*5=15x
-2*2x^2=-4x^2
-2*5=-10
6x^3+15x-4x^2-10=
6x^3-4x^2+15x-10
Answer Link
apologiabiology
apologiabiology apologiabiology
  • 04-08-2017
foil or whatever
just multiply

remember
(a-b)(c+d)=ac-bc+ad-bd
and
[tex](ax^m)(bx^n)=(a)(x^m)(b)(x^n)=abx^{m+n}[/tex]

so

(3x-2)(2x²+5)=
(3x)(2x²)+(-2)(2x²)+(3x)(5)+(-2)(5)=
6x³-4x²+15x-10
Answer Link

Otras preguntas

If a slope of a line is 2/0 is it 0 or undefined?
An airplane travels 3,260 kilometers in 4 hours. What is the airplane’s average speed?
which factor made the most difference in how agriculture affected the economies of the colonies?
Natalie earns $2.50 for each cd she sells and $3.50 for each dvd she sells.  Natalie sold 45 dvds last year.  She earned a total of $780 last year selling cds a
If 8 men can chop down 28 trees in one day, how many trees can 20 men chop down in one day?
the cafeteria has 45 square  tables that can be pushed together to form one long table for the lacrosse team's banquet. Each square table can seat one person on
5x+4y+100 in slope intercept form
How did scientists discover the common structure of cells?
Which of the following can be considered fossils? a. a 1 billion year-old rock. b. a 1 billion year-old piece of amber. c. a 1 billion year-old piece of amber w
Why was is difficult for the Arab people to form one nation?