Polynomials-Target+C-Factoring+GCF-Extended+Problems

Factor out the greatest common factor. math \textbf{1)} \ 35a^2b^2-5ab math

math \textbf{2)} \ 8x^4-20x^3-12x^2 math

math \textbf{3)} \ 10abc-5ab-15abcd math

Give at least 3 other representations of this expression. math \textbf{4)} \ -6x^4+24x^3+18x^2 math

math \textbf{5)} \ 24x^2+8x^3-32x^10 math