8th grade math help!!??!!??!!!?

Expand:1.(2x+5)^2. 2. (2x-5)^2

3.Find are or rectangle: width: sqrt of 2 lenth:4sqrt of 2

4.Simplify:2 sqrt of 20 x sqrt of 15

5. Write expressions for the are and perimeter of a square with side x+10 using a variable.

6.solve: 2x^2 = 50

1 Answer

Relevance
  • 8 years ago
    Favorite Answer

    1) 4x^2+10x+25

    2) 4x^2-10x+25

    3) 8

    4) 20Sqrt[3]

    5) area: x^2+20x+100 perimeter: 4x+40

    6) x=+/-5

Still have questions? Get your answers by asking now.