September 2018 1 15 Report

Zapisz wyrazenia nie uzywajac nawiasów,. Zredukuj wyrazy podobne .

a) x + (3x - y2 +7) = x + 3x - y2 + 7 = 4x - y2 + 7
b) -a + (2a - 3b - 1) = -a + 2a -3b -1 = a - 3b - 1
c) -x2 + (x2 - x - 7) = -x2 + x2 -x -7 = -x - 7
d) -b3 - b3 + b2 + b = -2b3 + b2 +b
e) (2a-3b) + (4a-b) = 2a - 3b + 4a - b = 6a - 4b
f) -(x2 - 3x) + (x2 + 3x) = -x2 + 3x + x2 + 3x = 6x
g) a + b + c - 2a + b - 2c = - a + 2b - c
h) -x2 + xy + z + x2 - 2xy - 2z = - xy - z

Pomocy jestem z tego beznadziejny ! : (
Z góry dziekuje Tym co mi pomoga : )


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