September 2018 2 15 Report

Wykonaj mnożenie i przeprowadź redukcję wyrazów podobnych.
a) 3a(17a - 11b) + a(14a+34b)
b) 7/12(1/7a + 4/21b)+9/10(1/3a - 5/6b)
c) (x+1)(x-2)-(x²-1)(x+3)
d)x(2-x)(7+x)


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