Neslepe0rsm
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 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

36 is what percent less than 48?
53°c below zero is what
Geologists have divided Earth's history into time units, which are largely based on?
How many rolls can you make with 5 2/3 cups of flour?
How to draw a smiley face on the graph using the Y= button on a graphing calculator
Solve the equation 6x=2x+40
Will someone please explain how to do -(7c-18)-2>0 Step for step??? I don't understand how to.
Lisa is standing on a dock beside a lake. She drops a rock from her hand into the lake. After the rock hits the surface of the lake, the rock's distance from th
32 cups are in how many gallons
Is 4.32 as a mixed number 4 32/100?