I assume we are solving?
multiply each term by x^4
9 - 35x^2 - 4x^4 = 0
4x^4 + 35x^2 - 9 = 0
(x^2 +9)(4x^2 - 1) = 0
x^2 = -9 or x^2 = 1/4
x = ± 3i or x = ± 1/2
let z = x^-2
then z^2 = x^-4
9 z^2 - 35 z - 4 = 0
(9z+1)(z-4) = 0
z = 4 or z = -1/9
you take it from there
college algebra - 9x^-4-35x^-2=0
college algebra - GCF -x^7,-7x^3,-35x^6
College Algebra - IS (x-2) a factor of f(x)= -9x^4+16x^3+8x^2-9x+2
algebra - factor the expression 4xsquared+35x+24 my answer: (4x+3)(x-8) 4x2 +35x...
College Algebra - The problem is to find the domain of 2x+7 / x^3-5x^2-9x+18. I ...
Algebra - What is the equation of the line that is perpendicular to y = 7/9x + ...
Algebra: factoring - I need to find the value of x. 9x^3 + 9x = 30x^2 It's ...
COLLEGE CALCULUS. HELP! - Let f(x)=(-3x^2+6)^4(9x^2+7)^14, Find f'(x). f'(x)= (-...
7th grade math - what is the equivalent expressin of 7(5x) 35x ? 35x
algebra - factor trinomial 9x(2) + 9x + 2 i do not know how to type the 9x and ...