Question

Expand (3x+5y-4x)²
please do it fast​

Answer 1

Answer:

25$y^{2}$ - 10yx + $x^{2}$

Step-by-step explanation:

$(3x+5y-4x)^{2}$ = $(5y-x)^{2}$ = (5y-x)(5y-x) = 25$y^{2}$ - 5yx - 5yx + $x^{2}$ = 25$y^{2}$ - 10yx + $x^{2}$

Answer 2

Answer:

(3x+5y-4x ) square

(5y-x)square 3x-4x=-x

25y square +x square -10xy (a-b) square = a square + b square -2ab