Question

$( 1.5 a + 2.5b) {}^{2}$
using formulae

Answer 1

✨hey mate! here's your answer!✨

(1.5a + 2.5b)²

= (1.5a)² + (2.5b)² + 2 (1.5a)(2.5b). (since, (a+b)² = a²+b²+2ab)

= 2.25a² + 6.25b² + 7.5ab .......Ans.

hope it is helpful ✌️!