calcul algebric fișe 1

FISE DE LUCRU 1

FISE DE LUCRU 1

CALCUL ALGEBRIC 1

Calculati

1) a) 5x2 3x + 7 2x2 + 4x 9 = .........................................................................

b) x2 5x 1 2x2 4x + 5 = ....................................................................

c) 2x2 7x + 4 3x2 + 9x + 1 = ......................................................................2) a) 2(3x 2) 2x(x + 3) = ............................................................................

b) 4x(2x 3) 3(5 4x) = .......................................................................

c) 3(5x 4) 5x(2x +3) = ........................................................................

3) a) (2x2 3x 1)(x 2) = ..........................................................................

..............................................................................................................

b) (x2 4x + 3)(3x 1) = .........................................................................

.............................................................................................................

c) (x2 x + 2)(2x2 3x 2) = .................................................................

.............................................................................................................

4) a) (x 3)2 = .................................................................................................

b) (x + 5)2 = ...................................................................................................

c) (2x 1)(2x + 1) = ...................................................................................

d) (3 4x)(3 + 4x) = ..................................................................................

5) a) (2x 1)2 (x + 2)2 (3x 2)(3x + 2) = ..................................................

.................................................................................................................

.................................................................................................................

b) ........................................................

.................................................................................................................

.................................................................................................................

c) ............................................

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6) a) 60x 5{3 2[7x 3(4x 1)]} =

b) 5x 5{x 2[3x + 3(2 x)]} = .

7) Calculati media aritmetic si media geometrica a numerelor

a) a = si b = ...............................................................................

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