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

how to solve x to the power of 2 = 14
kilo-  -  1,000deka-  -  10How much larger is a kilo- than a deka-?
What is an equivalent fraction for 20/12
If every positive number has two square roots and you can find the length of the side of a square window by finding a square root of the area, why is there only
In 1940 What was Germany’s initial strategy for conquering Britain?
What is two thirds of 120?
Why did female factory workers like Charlotte Woodward support the women’s rights movement?
how do I round 3.047 to the nearest hundred and show the math
How do three planes intersect at one point?
Natalie picked 135 berries in 15 minutes. If she continues picking at that rate, how long will it take her to pick 486 berries?