posted by .

What is the value of the expression 2x to the 2nd power + 3xy -4y to the 2nd power when x = 2 and y = -4? please show how to solve this

  • algebra -

    I assume your problem is this:

    2x^2 + 3xy - 4y^2

    Note: you can use ^ to mean raised to the power of some value; for example x^2 means x raised to the power of 2 (or x squared).

    Substitute 2 for x and -4 for y to evaluate the expression.

    I hope this will help get you started.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    7s over 5t to the negative 3rd power 2 to the negative 3rd power times X to the 2nd power times Z to the negative 7th power 7s to the zero power times T to the negative 5th power over 2 to the negative 1st power times M to the 2nd …
  2. 9th grade

    please show me how to solve for 5m/m+1 divided by 25m to 2nd power divided by m to 2nd power + 6m +5
  3. Algebra

    Factor each of following expressions x (4th power) - x (3rd power) - 6x (2nd power (a-b)(2nd power) - (a 2nd power + b) 2nd power
  4. math

    1. unite similar terms with parenthesis. x=2 y=-3 and z=5 find the value of ax to the 2nd power-cy+ax-2ax to the 2nd power+ 2cy to the 2nd power-ax-cy to the 2nd power+ ax to the 2nd power+ cy
  5. 8th Clinton Junior High School

    What is the Dividing Power of 12 a to the 2nd power or squared b to the 3rd power of cubed over or Divided by 6 a to the 2nd power b
  6. elemmanarty algebra

    Divide xy to 3rd power -3xy to 2nd power +2x to 2nd power y by xy
  7. math

    The question that have is to simplify and write the answer in exponential notation using positive exponents 2 to 4th power x 2 -2 These are my choices a 4 to the 8th power b 2 to the 8th power c 4 to the 2nd power d 2 to the 2nd power
  8. Math

    How do you solve 2t - 4t to the 2nd power?
  9. Math 8R - Help!!!!!!!!

    The expression 2(8a to the 2nd power + a - 1) + 3(a + 3) is equivalent to a) 16a to the 2nd power + 5a + 7 b) 40a to the 2nd power + 10a + 10 c) 10a to the 2nd power + 5a + 7 d) 48a to the 2nd power + 12a + 12 please help!!!!!!!
  10. Intermediate Algebra

    add or subtract the following polynomials as indicated (5.9x to the 3rd power+3.4x to the 2nd power - 7)-92.9x to the 3rd power -9.6x to the 2nd power +3)

More Similar Questions