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kap26 [50]
3 years ago
10

Write (2x - 5)2 as a trinomial.

Mathematics
2 answers:
solniwko [45]3 years ago
7 0

Answer:

4x^2-20x+25

Step-by-step explanation:

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

sashaice [31]3 years ago
4 0

Answer:

4x^2-20x+25

Step-by-step 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

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