Question

(25x^2+30xy+9y^2)-121z^2​

Answer 1

Answer:

(25x^2+20xy+9y^2)-121z^2

using identity:a^2+2ab+b^2=(a+b)^2

=) [(5x+3y)^2]-(11z)^2

using identity: a^2-b^2=(a-b)(a+b)

=) (5x+3y-11z)(5x+3y+11)

Answer 2

Answer:

plzz mark me as brainliest