Question

(5x^2+2y^2) (3x^2-7y^2)​

Answer 1

$(5 {x}^{2} + 2 {y}^{2} )(3 {x}^{2} - 7 {y}^{2} ) \\ \\ = 5 {x}^{2} (3 {x}^{2} - 7 {y}^{2} ) + 2 {y}^{2} (3 {x}^{2} - 7 {y}^{2} ) \\ \\ = 15 {x}^{4} - 35 {x}^{2} {y}^{2} + 6 {x}^{2} {y}^{2} - 14 {y}^{4} \\ \\ = 15 {x}^{4} - 14 {y}^{4} - 29 {x}^{2} {y}^{2}$

Answer 2

Answer:

It is the correct answer