Question

do this question please i requested u

Answer 1

Soln:-

=(2a-3b)^2.
=(2a)^2- 2×2a×3b + (3b)^2
=4a^2 -12ab +9b^2
=4×8^2 - 12×8×4 +9×4^2
=16

Answer 2

Answer:

-368 is your answer

Step-by-step explanation:

(2a-3b)²

= 4a²-2(2a)(3b)+(3b)²

= 4a²-(4a)(6b)+9b²

= 4a²-24ab+9b²

Now putting the values of a=8 and b=4:

4a²-24ab+9b²

4(8)²-24(8)(4)+9(4)²

256-768+144

400-768

-368 is your answer