[tex] 8x^{4}+36 x^{3}-72 x^{2} [/tex] , taking [tex] 4x^{2} [/tex] as the common factor
[tex] 4x^{2}(2 x^{2} +9x-18) [/tex] , factorising the expression in bracket
[tex] 4x^{2}[2 x^{2} +12x-3x-18] [/tex]
[tex]4 x^{2} [(2x(x+6)-3(x+6)][/tex]
[tex]4 x^{2} (2x-3)(x+6)[/tex]
Correct answer is the second expression
