Question

Convert into trinomial (0.6+2x)^2

Answer 1

0.36 + 2.4x + 4x^2

Explanation:

trinomial means in the format ax^2+bx+c

so in this case we just multiple

(0.6+2x)(0.6+2x) use FOIL (First Outer Inner Last

First: 0.6*0.6 = 0.36

Outer: 0.6*2x = 1.2x

Inner: 2x*0.6 = 1.2x

Last: 2x*2x = 4x^2

put them together 0.36+1.2x+1.2x+4x^2

simplify like terms 0.36+2.4x+4x^2

Hope this helps! :)