Question

The expansion of *
(2a – 3b)²​

Answer 1

Answer:

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Answer 2

★$\large\color{red} \mathrm{Hey \: There!}$★

We have, (x - y)^2 = x^2 - 2xy + y^2

.

In your question, x = 2a and y = 3b,

Thus,

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

$\mathrm{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 4 {a}^{2} - 12ab + 9 {b}^{2} }$