2 przykłady:
a) (2a-b)(3a+4b)-2(a+3b)(b-2a)
b) -(4a-3b)(a-b)+3(a+2b)(b-3a)
a.) (2a-b)(3a+4b)-2(a+3b)(b-2a) = 2a - b x (x to będzie razy) 3a + 4b - 2a - 6b x b - 2a = 2a - 3b
b.) -(4a -3b)(a - b ) + 3(a+2b)(b-3a) = -4a+3b x a-b+3a+6b x b - 3a = -4a +8b
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a.) (2a-b)(3a+4b)-2(a+3b)(b-2a) = 2a - b x (x to będzie razy) 3a + 4b - 2a - 6b x b - 2a = 2a - 3b
b.) -(4a -3b)(a - b ) + 3(a+2b)(b-3a) = -4a+3b x a-b+3a+6b x b - 3a = -4a +8b