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

Given 4 percent of (2a + b) is 18 and a is a positive integer, what is the greatest possible value of b?

From where did the first novel originate?

biomedical definition

Whats the equation of a circle centered at (7,1) that passes through (-2,10)

what are the effects of boiling sulfuric acid?

What is Taurine? Please help :)

70-q-q-2q=80 We'll this is confusing

Could you tell me what Are Spores?

Which object would best be identified by a periodic Doppler shift in a star's spectrum along with a dip in the stars light intensity? a black hole a nebula a co

how do you convert mol dm-3 to gdm-3 and vice versa