Question

ptnttn

a,0,5x3+4x2y+0,5xy2

b,0,25x9y-1)+0,75y(1-y)

c,0,25x2-0,5xy+0,25y2-0,25

d,(2\5x+1\3)2-(x\5+2\3)2

e,1\25x2+1\49y2

f,(1\9-x2-4y2-4xy

g,x2-x-y2-y

h,5x2-6x+1

k,x5+2x4=x3

help me!!! nhanh giùm nha chiều mình học r

f,

Answer 1

\(a,0,5x^3+4x^2y+0,5xy^2\\ =0,5x\left(x^2+8xy+y^2\right)\\ b,0,25x^9\left(y-1\right)+0,75y\left(1-y\right)\\ =0,25x^9\left(y-1\right)-0,75y\left(y-1\right)=\left(y-1\right)\left(0,25x^9-0,75y\right)\\ c,0,25x^2-0,5xy+0,25y^2-0,25\\ =\left(0,5x-0,5y\right)^2-0,25\\ =\left(0,5x-0,5y-0,5\right)\left(0,5x-0,5y+0,5\right)\\ =0,25\left(x-y-1\right)\left(x-y+1\right)\)

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