Posted by **tyneisha** on Monday, July 15, 2013 at 3:37pm.

(4x+y)^2

answer:16x^2+y^2

is this correct?

- alg 2 check? -
**Steve**, Monday, July 15, 2013 at 3:45pm
not quite

(4x+y)(4x+y) = 16x^2 + 4xy + 4xy + y^2

= 16x^2 + 8xy + y^2

You can always check your results by evaluating with numbers. For example, if x=1 and y=2,

(4+2)^2 = 36

16*4+1 = 65

a good sign your result is wrong

## Answer This Question

## Related Questions

- algebra - Solve the system by addition or substitution. 16x-4y=20 y=4x-4 I ask ...
- algebra - x^2 +16x+64 x^2+16x=64 (x=3)^2=16x-64 16x=-64 x=-4 Check this problem ...
- Algebra - There are two solutions to | 16x - 5 | = 3. The greatest solution is ...
- Math - 5(-3x - 2) - (x - 3) = -4(4x + 5) + 13 Answer Multiply factors. -15x - 10...
- math - The question is (2x+1)^2-2(2x^2-1) in simplest form Is this correct? [(2x...
- alg 2 check? - 1.)solve for n:-7n-21=-63 my answer: n=3 is this correct? please ...
- Intermediate Algebra - Am I going in the right track? 8x -1/x + 5x - 3/2x = 16x^...
- Algerbra - how do you solve 7(3x+4)=8(2x+5)+13 expand the parenthesis...I will ...
- 8th Grade Algebra: Answer Check #2 - Add or Subtract (Radicals) { this means ...
- Calc, Implicit Differentiation - Regard y as independent variable and x as ...

More Related Questions