Question

(3a-5b)² using identity ​

Answer 1

Answer:

Step-by-step explanation:

(a-b)^2=a^2+b^2-2ab

(3a-5b)^2=(3a^2)+(5b^2)-2(3a)(5b)

=9a^2+25b^2-30ab

Answer 2

$(3a - 5b) {}^{2} \\ \\ = > {3a}^{2} + 5b {}^{2} - 2(3a)( - 5b) \\ \\ = > {9a}^{2} + {25b}^{2} - 30ab$