Factor the equation 25n^2+4

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?