Witam potrzebuję to na dzisiaj daje naj!!!
zad 4,1Zapisz w postaci sumy algebraicznej
a) (a+4)* b) (b-5)* c) (3c+2)* d) (10-4b)*
*= to jest do kwadratu :)
zad 4,2Zapisz w postawci sumy albebraicznej
a) (s-3t)* b) (4p+4q)* c) (-2f-g)* d) (-5k+4m)* e) (-7+2z)* f) (-5-6w)*
*= to jest do kwadratu :)
Liczę na jak najszybsze rozwiazanie mojego zadania
Z góry dziękuję!!! :)
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Wzory skróconego mnożenia:
(a+b)²=a²+2ab+b² - kwadrat sumy;
(a-b)²=a²-2ab+b² - kwadrat różnicy;
a²-b²=(a-b)(a+b) - różnica kwadratów;
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a) (a+4)²=a²+8a+16
b) (b-5)²=b²-10b+25
c) (3c+2)²=9c²+12c+4
d) (10-4b)=100-80b+16b²
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a) (s-3t)²=s²-6st+9t²
b) (4p+4q)²=16p²+32pq+16q²
c) (-2f-g)²=[-1*(2f+g)]²=(-1)² * (2f+g)²=4f²+4fg+g²
d) (-5k+4m)²=(4m-5k)²=16m²-40km+25k²
e) (-7+2z)²=(2z-7)²=4z²-28z+49
f) (-5-6w)²=(-1)²*(5+6w)²=25+60w+36w²
zad.4,1
a) (a+4)^2 = a^2 + 2a4 + 4^2 = a^2 + 8a + 16
b) (b-5)^2 = b^2 -2b5 + 25 = b^2 -10b + 25
c) (3c+2)^2 = (3c)^2 + 2*3c*2 + 2^2 = 9c^2 + 12c + 4
d) (10-4b)^2 = 10^2 - 2*10*4b + (4b)^2 = 100 - 80b + 16b^2
zad.4,1
a) (s-3t)^2 = s^2 - 2*s*3t + (3t)^2 = s^2 - 6st + 9^2
b) (4p +4q)^2 = (4p)^2 + 2*4p*4q + (4q)^2 = 16p^2 + 32pq + 16q^2
c) (-2f-g)^2 = (-2f)^2 + 2*(-2f)*(-g) + g^2 = 4f^2 + 4fg + g^2
d) (-5k+4m)^2 = (-5k)^2 +2*(-5k)*4m + (4m)^2 = 25k^2 - 40km + 16m^2
e) (-7+2z)^2 = (-7)^2 + 2*(-7)*2z + (2z)^2 = 49 - 28z + 4z^2
f) (-5-6w)^2 = (-5)^2 + 2*(-5)*(-6w) + (6w)^2 = 25 + 60w + 36w^2
*=mnożenie
^2= do potęgi 2