2x^(2)+7x-4^(-4)" 9gry "

a (x) = 3x ^ (6) + 7x ^ (4) + 9x ^ (2) + 2x + 1, b (x) = 2x + 2

1+ 4x^(2)+7x^(4)+...

lim_(x rarr-oo)(3x^(3)+2x^(2)-7x+9)/(4x^(3)+9x-2)

lim_(x rarr oo) (3x^(3) + 2x^(2) - 7x + 9)/(4x^(3) + 9x -2)

Solve (9x^(2) + 8xy-4)-(7x^(2) -2xy +2) .

Add: (i) 3x, 7x (ii) 7y, -9y (iii) 2xy, 5xy, -xy (iv) 3x, 2y (v) 2x^(2), -3x^(2), 7x^(2) (vi) 7xyz, -5xyz, 9xyz, - 8xyz (vii) 6a^(3) , - 4a^(3), 10 a^(3), - 8a^(3) (viii) x^(2) - a^(2), -5x^(2) + 2a^(2), -4x^(2) + 4a^(2)

Simplify the following : 5x^(4) - 7x^(2) +8x - 1 +3x^(2) - 9x^(2) + 7 - 3x^(4)+11x - 2 +8x^(2)

Solve (9x ^(2) + 8 xy - 4) - ( 7x ^(2) - 2xy + 2).