Question

Resolva as expressões algébricas:

a) (x² + 14x + 49) . (x² -49) / x² -14x +49 =

b) x² - 2xy + 4y² / x -2y =

c) a² + 6a + 9 / a² - 3a =

d) x² - 4x - 1 / x² -1 =

e) 1/ x + 1 : x + 2/ x² - 1

f) a - b / 4 (a² - b²) =

Answer 1

a) (x+7)²* (x-7)(x+7) /(x-7)² =(x+7)³/(x-7)

b) (x² - 2xy + 4y²) / (x -2y)

c) (a+3)²/a(a-3)

d) (x² - 4x - 1) / (x+1)(x-1)

e) 1/ (x+1) *(x+1)(x-1) /( x + 2)/=   (x-1)/(x + 2)

f)( a - b) / 4(a-b)(a+b) =1/4(a+b)