What is the value of the expression 2x2 + 3x-y – 4y2 when x = 2 and y = –4?

Question

16-01-2018
Mathematics

contestada

What is the value of the expression 2x2 + 3x-y – 4y2 when x = 2 and y = –4?

Respuesta :

Otras preguntas

michelle is going on a 325 mile trip. if she drives for 3 hours at an average speed of 45 miles per hour, how many miles will she still have left to drive to co

please. help me! help me

how can you relate entropy to renewable and non-renewable energy?

Identify the statements that CORRECTLY describe the Freedman's Bureau. It was officially called the "The Bureau of Recently Emancipated Citizens of the United

In a geometric sequence a2=-320 and a5=625. Write the explicit formula for the sequence

How has the invention of GPS and the internet made finding a location using coordinates easier and more reliable?

which diagram most effectively shows how a voter influences policy

a train with a mass of 25000 kg increases it’s speed from 10 m/s to 25 m/s in 20 seconds. assume that the acceleration is constant and that you can neglect fric

The triangle has an area of cm2 and a base of cm. What is the length of h?

xzxm4453oyro92 xzxm4453oyro92 · Answer 1 · 2018-01-17T22:49:27+01:00

xzxm4453oyro92 xzxm4453oyro92

17-01-2018

Write the problem: 2x^2+3x-y-4y^2
Substitute x and y: 2(2)^2+3(2)-(-4)-4(-4)^2
Exponents and Multiplication: 8+6+4-64
Add and Subtract: -46

Your Answer is -46

Answer Link