NA DZISIAJ!!! Zadania ze zbioru ćwiczena matematyka wokół nas dla klasy 2 gim.ZAD 12/60 a b c 13/60 .... Question from @97bartek97

September 2018 2 26 Report

NA DZISIAJ!!! Zadania ze zbioru ćwiczena matematyka wokół nas dla klasy 2 gim.ZAD 12/60 a b c 13/60 a b c

(3a+2c)²=

(5x+3y)²=

(2a+4b)²=

(3x-8y)²=

(4a-12)²=

(3p-2q)²=

Poratujcie mnie ;)

girl95

Zadanie 12

$(3a+2c)^{2} = 9a^{2}+12ac+4c^{2}$

$(5x+3y)^{2} = 25x^{2}+30xy+9y^{2}$

$(2a+4b)^{2} = 4a^{2}+16ab+16b^{2}$

Zadanie 13

$(3x-8y)^{2} = 9x^{2}-48xy+64y^{2}$

$(4a-12)^{2} = 16a^{2}-96a+144$

$(3p-2q)^{2} = 9p^{2}-12pq+4q^{2}$

0 votes Thanks 1

lampardsix

12. Tutaj liczymy ze wzory skróconego mnożenia $(a+b)^{2} = a^{2} + 2ab + b^{2}$

a) $(3a + 2c)^{2} = (3a)^{2} + 2*3a*2c + (2c)^{2} = 9a^{2} + 12ac + 4c^{2}$

b) $(5x + 3y)^{2} = (5x)^{2} + 2*5x*3y + (3y)^{2} = 25x^{2} + 30xy + 9y^{2}$

c) $(2a + 4b)^{2} = (2a)^{2} + 2*2a*4b + (4b)^{2} = 4a^{2} + 16ab + 16b^{2}$

13. Liczymy ze wzoru skróconego mnożenia : $(a - b)^{2} = a^{2} - 2ab + b^{2}$

a) $(3x - 8y)^{2} = (3x)^{2} - 2*3x*8y + (8y)^{2} = 9x^{2} - 48xy + 64y^{2}$

b) $(4a - 12}^{2} = (4a}^{2} - 2*4a*12 + 12^{2} = 16a^{2} - 96a + 144$

c) $(3p - 2q)^{2} = (3p)^{2} - 2*3p*2q + (2q)^{2} = 9p^{2} - 12pq + 4q^{2}$

Pozdrawiam :)

1 votes Thanks 1

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