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Solution of algebraic expressions

Solution of algebraic expressions|expand, (y+5)(y+2), y
 Exercise.
Expand the following products:
1. 2y(y+4)
2. (y+5)(y+2)
3. -(7-x)(7+x)
4. (7k+2)(3-2k)
5. (1-4x)^2
6. (-2y^2-4y+11)(5y-12)
7. (10y+3)(-2y^2-11y+2)
8. (-12y-3)(12y^2-11y+2)
9. (2y^6+3y^5)(-5y-12)
10. (-6y^4+11y^2+3y)(y+4)(y-4)
Answer
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