\int _0^3\frac{x^2}{\sqrt{81-x^4}}dx
3*2.5*3*0.5*2.5*1.5
the product of x and x - 1 is not more than 6
x+y=4 x+2y=6
4%180
2x^2-x-9=0 quadratic
Find where the graph of $f\left( x \right) = {x}^{4} + 21 {x}^{2} - 100$ intercepts the coordinate axes.
2x^2-x-9=0 quadratic formula
find the x intercept of f\left(x\right)=x^4+21x^2-100
x^4+21x^2-100
