Question

(5 x- 4y)^2
(2x + 3y) x (2x - 3y)
(x - 5) - (x + 5)
(2x + 5) - (2x - 5)
(x + 2)^2
(2x - y)^2
me ajuda pf
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Answer 1

R esposta:

$(5x - 4y)^{2}$ = 25$x^{2}$ - 40xy + 16$x^{2}$

(2x + 3y) x (2x - 3y) = 4$x^{2}$ - 9$y^{2}$

(x - 5) - (x + 5)  = -10

(2x + 5) - (2x - 5)  = 10

$(x + 2)^{2}$ = $x^{2}$ + 4x + 4

$(2x - y)^{2}$ = 4$x^{2}$ - 4xy + $y^{2$