Odpowiedź:
a.(x+7)(2x-1)=2x^2-x+14x-7=2x^2+13x-7
b. (2a-1)(a+4)=2a^2+8a-a-4=2a^2+7a-4
c. (4a-1)(2-3a)=8a-12a^2-2+3a=-12a^2+11a-2
d. (a^5-1)(a+1)=a^6+a^5-a-1
e. (2k^2-1)(2k+1)=4k^3+2k^2-2k-1
f. (3-p^3)(p^2+1)=
=3p^2+3-p^5-p^3=-p^5-p^3+3p^2+3
Szczegółowe wyjaśnienie:
^ do potęgi
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Odpowiedź:
a.(x+7)(2x-1)=2x^2-x+14x-7=2x^2+13x-7
b. (2a-1)(a+4)=2a^2+8a-a-4=2a^2+7a-4
c. (4a-1)(2-3a)=8a-12a^2-2+3a=-12a^2+11a-2
d. (a^5-1)(a+1)=a^6+a^5-a-1
e. (2k^2-1)(2k+1)=4k^3+2k^2-2k-1
f. (3-p^3)(p^2+1)=
=3p^2+3-p^5-p^3=-p^5-p^3+3p^2+3
Szczegółowe wyjaśnienie:
^ do potęgi