Use GCF and the distributive property to write equivalent expressions in factored form for the following expression. 4d+12e

If a • b*2 = 1.8 x 10*-7, and c•b/d = 7.2 x 10*-4, find the value of a•d*2/c*2

Which is an equation for the nth terms of the sequence 12,15,18,21

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.