January 2019 1 29 Report
Wyrażenia algebraiczne. Rozwiąż:
a) (2x-5y)(2x+5y)-6(x+2y)^{2}
b) (2x+1)^{2}-(x-4)(x+4)-3(x^{2}-5)
c) (3x+1)(3x-1)-(3x-1)^{2}-(3x-1)^{2}
d) -(x-3)^{2}-2(x-1)^{2}+(x-1)(x+1)
e) 2x-[3x-2(5-x)^{2}]
f) 2(3-x)^{2}-5[3*(2x-1)^{2}-5(x+1)^{2}]
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