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Polynom och räkneregler

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Mathematics (Ma3b) Flashcards on Polynom och räkneregler, created by Joacim Jonsson on 09/11/2017.

Flashcards by Joacim Jonsson, updated more than 1 year ago

	Created by Joacim Jonsson over 7 years ago

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Resource summary

Question	Answer
Polynom	$a+bx+cx^2+dx^3+...$ Ex: $2.15+2.1x-0.41x^2$ $-3x+8$
Gradtal	Högsta exponenten i ett polynom Grad 2: $2.15-0.41x^2$ Grad 1: $-3x+8$
$-(2x-3)=$	$-(2x-3)=-2x+3$ Parentesregel: $-(a-b) = -a+b$
$2x(x^2-5x)=$	$2x(x^2-5x)=2x^3-10x^2$ Distributiva lagen: $a(b+c)=ab+ac$
$(7-2x)(3-4x)=$	$(7-2x)(3-4x)=\\7\cdot3-7\cdot4x-2x\cdot3+2x\cdot4x$ Distributiva lagen: $(a+b)(c+d)=ac+ad+bc+bd$
$(3x+2)(3x-2)=$	$(3x+2)(3x-2)=9x^2-4$ Konjugatregeln: $(a+b)(a-b)=a^2-b^2$
$(y-5)^2=$	$(y-5)^2=y^2-10y+25$ Kvadreringsreglerna: $(a+b)^2=a^2+2ab+b^2$ $(a-b)^2=a^2-2ab+b^2$

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