Fatore as expressões abaixo:?
a) 9x²y + 15xy² (resposta: 3xy(3x + 5y)
b)xy - 3x + y - 3 (resposta: (y - 3) (x + 1)
c) a² - 4b² (resposta: a + 2b) (a - 2b)
d) a² - 10a + 25 (resposta: (a - 5)²
e) 2x² - 3x + 4xy - 6y (resposta: (2x - 30 (x + 2y)
12x² - 21x (resposta: 3x(4x - 7)
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Answers & Comments
a)3xy(3x+5y)
b)x(y-3)+1(y-3)=
(y-3)(x+y)
c)(a+2)(9a-2b)
a)3xy(3x+5y)
b)x(y-3)+1(y-3)=
(x+1)(y-3)
c)(a+2b)(a-2b)
d)(a-5)²
e)(x+2y)(2x-3)
f)3x(4x-7)