13° TD de álgebra - 8° Ano - CMSM - 3° Bim - 2012.

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13° TD Simplifique as seguintes frações:

− 4a 2 b = 1) 16ab 2 c

x2 + x = 2) 2 x −1

a 2 − 25 = 3) 4a + 20

3m 2 − 3 = 4) m +1

ax + bx − ay − by = 5) a2 − b2

a 2 + 3a = 6) 2 a − 2a − 15

7)

(2a + 3b).(3a − b) = (b − 3a ).(3b − 2a)

4 + 4a = 9) 2 a + 2a + 1

8)

5 x + 35 + 7 y + xy = 5+ y

x 2 − 8 x + 16 = 10) x 2 − 16

(13° TD de matemática...................8° Ano – CMSM............................................. Prof Bernardo ............... )

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ab + b + a 2 + a = 11) 2 a + 2ab + b 2

x 2 + ( y + x)( y − x) + xy = 12) 2 y + 2x

(a 2 − 1) + (a + 1) = 13) (a 2 − 1) − (a − 1)

( a + b) 2 − c 2 = 14) (b + c) 2 − a 2

1 y = 15) 1 1− 2 y 1−

16)

a − a2 a2 −1 = a −a a +1

(13° TD de matemática...................8° Ano – CMSM............................................. Prof Bernardo ............... )

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