Verified answer

pascal triangle for 4th power is 1,4,6,4,1

(2x-3y)^4 = (2x)^4 - 4(2x)^3(3y) + 6((2x)^2(3y)^2 - 4 (2x)(3y)^3 + (3y)^4

= 16x^4 - 96x^3y + 196 x^2y^2 - 216xy^3 + 81y^4

2x+3y^4

(2x – 3y)^4

(2x – 3y)^4

(1)(2x)^4 + (4)(2x)^3(-3y) + (6)(2x)^2(-3y)^2 + (4)(2x)(-3y)^3 + (1)(-3y)^4

16x^4 – 96x^3y + 216x^2y^2 – 216xy^3 + 81y^4

Thanks to the person above me -- I almost forgot about Pascal's triangle

1 4 6 4 1 ____> 4th power