Question

(x-3y)^2 + 6xy with step by step​

Answer 1

Answer:

x² + 9y²

Step-by-step explanation:

(x-3y)² + 6xy

[x² - 2(x)(3y) + (3y)²] + 6xy  [(a-b)² = a² - 2ab + b²]

x² - 6xy + 9y² + 6xy

x²  + 9y²- 6xy + 6xy

x² + 9y²