Question

(2x/9 - 9y/4) ^2 evaluate ​

Answer 1

we know that (a-b) ^2=a^2-2ab +b ^2

so,

=(2x/9)^2 -2×2x/9×9y/4 +(9y/4) ^2)

=4x^2/81 -xy +81y/4

Answer 2

i think u r the student of class 10th :)

hopefully its helped u :)