Question

Find the product (0.9x+0.7y)(0.81x²-0.63xy+0.49y²)​

Answer 1

Step-by-step explanation:

${0.729x}^{3} - 0.567 {x}^{2}y + 0.441x {y}^{2} + 0.567 {x}^{2}y - 0.441x {y}^{2} + 0.343 {y}^{3}$

$0.729 {x}^{3} + 0.343 {y}^{3}$