m(x)=3x
n(x)=-0,5x
i(x)=7x^2-3
f(x)=2x^2
g(x)=x^2-6x
r(x)=-9x-5
p(x)=6x+1
h(x)=-4x^2
x^2-16=0
q(x)=-2x+4
5x-7=0
