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

a pet store sold 245 cans of cat food last weekend for a total of $90.65. what was the price per can?

plese help me finish these questions

What number is 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000?

The development of the embryo/fetus occurs in the vagina fallopian tubes uterus ovaries

What must be added to 3x-7 to make x^2 +4x-1 ?

Andres company manufactures rectangular storage sheds decisions are made with aluminum side panels that measure 8 feet 10 feet 12 feet and 15 feet Along the bot

What are the two types of neurons? Which type of neuron is activated when you spontaneously withdraw your hand when it touches something hot?

What is the value of x?

Read the excerpt below from act 1.3 of The Tragedy of Julius Caesar and answer the question that follows. CASSIUS: Now know you, Casca, I have moved already Som

What makes Galatea come alive?