1. which statements are true? select each correct answer. a. 6m^2+18m=6m^2(1+3m) b. 40m^6−4=4(10m^6−1) c. 15m^3−6m=3m(5m^2−6m) d. 32m^4+12m^3=4m^3(8m+3) 2. which expressions are completely factored? select each correct answer. a. 32y^10−24=8(4y^10−3) b. 18y^3−6y=3y(6y^2−2) c. 20y^7+10y^2=5y(4y^6+2y) d. 16y^5+12y^3=4y^3(4y^2+3) 3. factor. 8x^5+4x^2−12 a. 4(2x^5+4x^2−12) b. 4x^2(2x^3+x−3) c. 4(2x^5+x^2−3) d. 8(x^5+4x^2−12)