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# 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

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- 8 years agoFavorite 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

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