Wzorki :[tex](a+b)^2 = a^2+2ab+b^2[/tex],
[tex](a-b)^2 = a^2-2ab+b^2[/tex],
[tex](a+b)(a-b) = a^2-b^2[/tex]Podstawiamy i mamy wyniki :)a)[tex](x+5)^2 = x^2 +10x+25[/tex]b)[tex](2y+4)^2 = 4y^2 + 16y+16[/tex]c)[tex](7-a)^2 = 49- 14 a +a^2[/tex]d)[tex](\sqrt3-2b)^2=3-4\sqrt3b+4b^2[/tex]e)[tex](3x+4)(3x-4) = 9x^2-16[/tex]f)([tex](\sqrt5-2)(\sqrt5+2)=5-4= 1[/tex]Pozdrawiam :')
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Wzorki :
[tex](a+b)^2 = a^2+2ab+b^2[/tex],
[tex](a-b)^2 = a^2-2ab+b^2[/tex],
[tex](a+b)(a-b) = a^2-b^2[/tex]
Podstawiamy i mamy wyniki :)
a)[tex](x+5)^2 = x^2 +10x+25[/tex]
b)[tex](2y+4)^2 = 4y^2 + 16y+16[/tex]
c)[tex](7-a)^2 = 49- 14 a +a^2[/tex]
d)[tex](\sqrt3-2b)^2=3-4\sqrt3b+4b^2[/tex]
e)[tex](3x+4)(3x-4) = 9x^2-16[/tex]
f)([tex](\sqrt5-2)(\sqrt5+2)=5-4= 1[/tex]
Pozdrawiam :')