Factoring - Grouping Method - 4 Term Polynomials

Factor the Following 4-Term Polynomial: 
 $56m^3+21m^2+8m+3$  

•  $(7m^2+1)(8m+3)$  

•  $(7m^2+1)(8m-1)$  

•  $(7m^2+3)(8m-1)$  

•  $\left(7m^2+3)(8m+1)\right)$  

Factor the Following 4-Term Polynomial: 
 $56x^3-64x^2+35x-40$  

•  $(8x^2-5)(7x-8)$  

•  $8(8x^2-5)(x-1)(x+1)$  

•  $(8x^2+5)(7x-8)$  

•  $8(x-1)(x+1)(7x+5)$  

Factor the Following 4-Term Polynomial: 
 $3n^3+4n^2-21n-28$  

•  $(n^2+7)(n^2+4)$  

•  $(n^2-7)(3n+4)$  

•  $(n^2+7)(n-2)(n+2)$  

•  $(n^2-7)(n-2)(n+2)$  

Factor the Following 4-Term Polynomial: 
 $3m^3-m^2+12m-4$  

•  $(m-1)(m+1)(3m-4)$  

•  $(m^2+4)(3m+1)$  

•  $(m-2)(m+2)(3m+4)$  

•  $(m^2+4)(3m-1)$  

Factor the Following 4-Term Polynomial: 
 $5n^3+3n^2-25n-15$  

•  $5(n^2-5)(n-1)$  

•  $(n^2+5)(5n-3)$  

•  $(n^2-5)(5n+3)$  

•  $(n^2+5)(5n+3)$  

Factor the Following 4-Term Polynomial: 
 $49a^3+42a^2-42a-36$  

•  $(7a^2+6)(7a+6)$  

•  $(7a^2-6)(7a+6)$  

•  $(7a-6)(7a^2-6)$  

•  $(7a^2+6)^2$  

Factor the Following 4-Term Polynomial: 
 $20n^3-4n^2+5n-1$  

•  $(2n-1)(2n+1)(5n-1)$  

•  $(5n+1)(2n-1)(2n+1)$  

•  $(4n^2+1)(5n+1)$  

•  $(4n^2+1)(5n-1)$  

Factor the Following 4-Term Polynomial: 
 $35x^3-15x^2-14x+6$  

•  $(5x^2-2)(7x-3)$  

•  $[5x^2-2)(7x-2)$  

•  $(7x-2)(5x^2+3)$  

•  $(7x-2)(5x^2-3)$  

Factor the Following 4-Term Polynomial: 
 $15n^3-9n^2+120n-72$  

•  $(n^2+8)(5n-3)$  

•  $3(n^2+8)(5n-3)$  

•  $3(n^2-3)(5n-8)$  

•  $3(n^2+8)(n^2+3)$  

Factor the Following 4-Term Polynomial: 
 $98a^3+42a^2+49a+21$  

•  $7(2a^2+1)(7a+3)$  

•  $(7a+1)(2a^2+3)$  

•  $(2a^2+3)(7a-1)$  

•  $(2a^2+1)(7a-3)$