Question

(0.1x + 0.4y)^2

Answer 1

0.1x * 0.1x + 0.1x*0.4y + 0.1x*0.4y+ 0.4y* 0.4y

Answer 2

im still confused

Answer 3

\[=(\frac{x}{10}+\frac{4y}{10})(\frac{x}{10}+\frac{4y}{10})\]So,\[\frac{x^2+8xy+16y^2}{100}\]If you want it in decimal form then,\[=0.01x^2+0.08xy+0.16y^2\]