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

if g(x)*x+1/x-2 abd h(x)=4-x, what is the value of (g*h) (-3)

Jerry has 48 inches of string. He cuts the string into 8 inch pieces. The letter y shows how many pieces of string he has. y□8=48 Which operation would comple

Which kept African Americans from nominating candidates for office? poll taxes literacy tests white primaries grandfather clauses

Which is a type of epithelial tissue? A. the skin on your hand B. cardiac muscle C. neurons D. cartilage

What is the simplified form of the following expression?Oo oo

The power of (-7)4 is negative. True False

PLEASE HELP, YOU WILL RECEIVE 50 BRAINLY POINTS. Use the lac operon to explain how genes can be turned on or off to control the expression of a protein (enzyme)

What is the measure of XZ?

Which statements describe how a machine can help make work easier? Check all that apply. It can put out more force than the input force by decreasing the distan

What is the solution to 3 times the square root of 4 minus 2 times the square root of 4? A. 0 B. 1 C. 2 D. 3