Rozwiązane

(x + 5) (2x + 2) = (3x – y) (x + 2y) = (a + b) (5a – 8b) = (2k – 3m) (m – k) = (2a – b) (2a + b) =

Mnożenie sum algebraicznych

Odpowiedź :

Friki3457viz
(X+5)(2x+2)= 2x2+2x+10x+10=2x2+12x+10
(3X-y)(x+2y)=3x2+6xy-xy-2y2=3x2-2y2+5xy
(A+b)(5a-8b)=5a2-8ab+5ab-8b2=5a2-8b2-3ab
(2k-3m)(m-k)=2km+2k2-3m2-3km=2k2-3m2-km
(2a-b)(2a+b)=4a2+2ab-2ab-b2=4a2-b2

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