Question

Find the product.
(3x + y) (3x - 3y)

Answer 1

Answer:

$9x^{2} -6xy-3y^{2}$

Step-by-step explanation:

$(3x+y)(3x+-3y)$

$(3x)(3x)+(3x)(-3y)+(y)(3x)+(y)(-3y)$

$9x^{2} -9xy+3xy-3y^{2}$

$9x^{2} -6xy-3y^{2}$

Answer 2

Answer:

9xsq - 6xy -3ysq

Step-by-step explanation:

3x x 3x = 9xsq

3x x -3y= -9xy

y x 3x = 3xy

y x -3y= -3ysq

9xsq -9xy +3xy -3ysq

9xsq -6xy - 3ysq

sq = squared