answer all this questions

1) Eliminate in 11x^-2+(11x)^-2

2)perform the indicated operation and simplify ..

a)3(x^2+y^2) –x (y+2x)+2y cx+3y

b)-5c4x^2(2x+2)-2(x^2-5-2x)

factor the expression

a)5x^2+25x+30

b)3x^2-3

c)a^3+27

b) bu^3 v^3+18u^2 v w^4 – 12 u^2 v^3

3) simplify ( _3m^3_____)

qn^6

4)solve by using factoring

1)z^2 -8z=0

2) x^-4x+4=0

3)x^3 - 100x=0

5) find all real roots by using quadratic formula .

1) p^2 - 7 p+3 =0

2) 2 -2 x+x^2 =0

3) 2x^2+4x=5

6) a sales person needs to caulcuate the cost of an item with sale tax of 8.25% write an qvation that repersents the total cost c of an item costing x dollars

7) express the indicated system in term of the remaing system .

s= p (1+rt) j r (solve for r)

s=p (1+rt) jt ( solve for t)