Neslepe0rsm Neslepe0rsm

03-09-2016
Mathematics

contestada

what is the value of the expression 2x2 3xy – 4y2when x = 2 and y = –4? a. –80 b. –32 c. 32 d. 80

Respuesta :

nobillionaireNobley nobillionaireNobley

05-09-2016

2x^2 + 3xy - 4y^2 when x = 2 and y = -4
= 2(2)^2 + 3(2)(-4) - 4(-4)^2 = 2(4) + (-24) - 4(16) = 8 - 24 - 64 = -80

Answer Link

Otras preguntas

PLEase HELP I DON’t get it :(

Find the sum: 564 + 3,598 = ?

A claim of answers the questions of who has created or caused a situation.

please help on this one someone

Marjorie is designing a poster for an upcoming project. The poster consists of a rectangle connected to a semi-circle. The length of a rectangle is 35 inches.

Did the Chinese think all states were equal in international relations ?

what punchline does Twain build to in paragraph 4? ( The Notorious Jumping Frog of Calaveras County )

what is the greatest common factor of 64 and 32

Add an intersection with a red light times are normally distributed with a mean Time of three minutes and a standard deviation of .25 minutes approximately what

The stream of water from a fountain follows a parabolic path. The stream reaches a maximum height of 7 feet, represented by a vertex of (4,7) , and lands 8 feet