andreev9039 andreev9039

23-06-2018
Mathematics

contestada

2mn + 4n 2 and 5m 2 - 7mn

answers at bottom
1) 9m2 + 9mn - 4n2
2) 5m2 - 14mn - 4n2
3) 5m2 - 5mn + 4n2
4) 5m2 + 5mn - 4n2

Respuesta :

28-06-2018

[tex](2mn+4n^2)+(5m^2-7mn)\\\\=2mn+4n^2+5m^2-7mn\qquad\text{combine like terms}\\\\=5m^2+(2mn-7mn)+4n^2\\\\=\boxed{5m^2-5mn+4n^2}\to 3)[/tex]

Answer Link

Otras preguntas

how did americans feel about the future of their new government in 1790

explain why the direction along which the electromagnetic wave travels is not the same as the direction along which the changing electric field is applied.

fairs were an important part of a

What occurs when there is a lot of money in circulation, but it is worth less and prices are rising? A. inflation B. shortage C. deflation D. recession

how do we round 8.373 to the nearest hundredth?

Why do viruses need living hosts, such as bacteria or eukaryote cells? A) The host cell is the source of food for the virus. B) Viruses depend on the host cells

One of the central themes in biology is how DNA, RNA, and proteins are related. Describe how genetic information flows between those types of molecules. Include

how do you put 76.342 76.332 76.232 76.343 in descending order

A jar contains 18 apple lollipops, 7 strawberry lollipops, and 10 grape lollipops. Irvin randomly selects a lollipop, gives it to his brother, and then randomly

Life coaches use __________ to teach people life skills, relationship skills, and communication skills. A. telephone interviewing B. standardized tests C. motiv