### Exercise condition:

5♦

Find the sum and the difference of these binomials:

$0.4{x}^{2}+0.03{y}^{2}$ and $0.15{x}^{2}-0.09{y}^{2}$

Choose the correct answer:

5♦

Find the sum and the difference of these binomials:

$0.4{x}^{2}+0.03{y}^{2}$ and $0.15{x}^{2}-0.09{y}^{2}$

Choose the correct answer: