Question

expand (2a^2-9) (1.56b^2-2/3)​

Answer 1

hey mate

here is your answer

$( {2a}^{2} - 9)(1.56 {b}^{2} - \frac{2}{3} \: ) \\ = {2a}^{2}(1.56 {b}^{2} - \frac{2}{3} ) - (1.56 {b}^{2} - \frac{2}{3} ) \\ = 3.12 {a}^{2} {b}^{2} - \frac{4 {a}^{2} }{3} - 14.04 {b}^{2} + \frac{18}{3}$

hope it helps u ....