Wykonaj mnozeni, zredukuj wyrazy podobne a)(x+7)(2x-1)= b)(2a-1)(a+4)= c)(4a-1)(2-3a)=
a) (x+7)(2x-1) = 2x kwadrat -1x +14x-7=2x kwadrat +13x -7
b)(2a-1)(a+4) = 2a kwadrat+ 8a-1a-4= 2a kwadrat +7a-4
c) (4a-1)(2-3a)= 8a - 12a kwadrat -2+3a = 19a- 12 a kwadrat -2
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a) (x+7)(2x-1) = 2x kwadrat -1x +14x-7=2x kwadrat +13x -7
b)(2a-1)(a+4) = 2a kwadrat+ 8a-1a-4= 2a kwadrat +7a-4
c) (4a-1)(2-3a)= 8a - 12a kwadrat -2+3a = 19a- 12 a kwadrat -2