115k views
3 votes
Write (2x - 5)2 as a trinomial.

2 Answers

6 votes

Answer:


4x^2-20x+25

Explanation:

You can use the formula:


(u+v)^2=u^2+2uv+v^2.


(2x-5)^2=(2x)^2+2(2x)(-5)+(-5)^2


(2x-5)^2=4x^2-20x+25.

You could also use foil:


(2x-5)^2=(2x-5)(2x-5)

First: 2x(2x)=4x^2

Outer: 2x(-5)=-10x

Inner: -5(2x)=-10x

Last: -5(-5)=25

--------------------------Add.


4x^2-20x+25

User Bvarga
by
8.4k points
5 votes

Answer:


4x^2-20x+25

Explanation:


(2x-5)^(2) \\(2x)^2+2(2x)(-5)+(-5)^2\\4x^2-20x+25

User Orelus
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories