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# Expanding and Simplifying Polynomial Expressions (Part 2)

- 1Expand and Simplify $$(2x+3)(x-4)+(x+2)^2 $$
- 2Expand and Simplify $$(x-3)^2-(x-2)(x+2) $$
- 3Expand and Simplify $$(2x-5)(2x+5)-(x+3)(x-3) $$
- 4Expand and Simplify $$(2x+3)^2+(x-2)^2 $$
- 5Expand and Simplify $$(5a+2)^2-(2a+3)^2 $$
- 6Expand and Simplify $$3(x+2)(x-2)-2(x+5)^2 $$
- 7Expand and Simplify $$-2(2a+3b)^2-3(a+b)(a-b) $$
- 8Expand and Simplify $$-(m+2n)(m-2n)-(2m+n)^2 $$
- 9Expand and Simplify $$(x+7)(x-7)-(x-3)(x+3) $$
- 10Expand and Simplify $$(3x+4y)^2-2(4x-y)(4x+y) $$

$$e=mc^2$$