breadwinnerchi
breadwinnerchi breadwinnerchi
  • 13-04-2017
  • Mathematics
contestada

What is the value of the expression 2x^2 + 3xy -4y^2 when x = 2 and y = -4

Respuesta :

campbellst2005 campbellst2005
  • 13-04-2017
all you are being asked to do is a simply substitution and then evaluate the answer 

[tex]2\times 2^2 + 3\times2\times(-4) - 4\times (-4)^2[/tex]

type it into your calculation the way I have written it, to get your answer. 

Hope it helps
Answer Link

Otras preguntas

i need help fast please Solve this and show steps 4.5×8-(0.4+9.6-(3.6-1.8))​
2.4.2 Test (CST): Savings and InvestingQuestion 2 of 20 Which aspect of investing should Taylor not focus on if she wants to invest ethically? A. The company's
which one of the following is a DNA virusA: Hin1 B: Hepatits C: HIV D: Herpes Complex​
Help with the question in the red box please
The school football team is hosting a fundraiser dinner. Tickets are $20 for adults, $15 for seniors, and $6 for children. The expression 20a + 15s + 6c represe
Jerry is 15 years old. In his town there is a curfew for teenagers his age to be home by 9 pm. What type of law applies to this situation? Military Statute J
Find the number that makes the ratio equivalent to 1:2. 6: What is it
3. In the expansion of (ax^2+ by)^8 the coefficients of last two terms are -5832 and 6561, respectively. Find the values of: a and b
why is cooking faster with a pressure cooker. plz help me I beg​
Look at the screenshot if you answer correctly i will mark you brainliest