Question

answer me the b ,d and e prt​

Answer 1

Answer:

x2+9y2-6xy

Step-by-step explanation:

b.

(x+3y)2- (x-3y)2

=(x-3y)2

X2+3y2- 2×X×3y

=X2+9y2-6Xy

Answer 2

Step-by-step explanation:

plz do it mindfully and it is the formula base question ..... i hope that u wll understand ....

B) first

$(a + b) {}^{2}$

then

$(a - b) {}^{2}$

then u can understand....