What is the missing term in the factorization? 18x2−32=2(3x+−4)

18x^2 - 32 =
2(9x^2 - 16) =
2(3x + 4)(3x - 4) <==

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post