Oblicz, zapisz obliczenia f) (2x-1)(3x-1)-(3x-2)(2x-3)=0g) (4-x) (2x+3)+ 2x^2=6h) (2x+3)(3x-1)+4=(6x.... Question from @niktola8

June 2022 2 11 Report

Oblicz, zapisz obliczenia
f) (2x-1)(3x-1)-(3x-2)(2x-3)=0
g) (4-x) (2x+3)+ 2x^2=6
h) (2x+3)(3x-1)+4=(6x-2)(x+1)
Ten znak ^2 to potęga do drugiej

Elza651

Odpowiedz w załączniku

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Magda

Odpowiedź:

$f)\\\\(2x-1)(3x-1)-(3x-2)(2x-3)=0\\\\6x^2-2x-3x+1-(6x^2-9x-4x+6)=0\\\\6x^2-5x+1-(6x^2-13x+6)=0\\\\6x^2-5x+1-6x^2+13x-6=0\\\\8x-5=0\\\\8x=5\ \ /:8\\\\x=\frac{5}{8}$

$g)\\\\(4-x)(2x+3)+2x^2=6\\\\8x+12-2x^2-3x+2x^2=6\\\\5x+12=6\\\\5x=6-12\\\\5x=-6\ \ /:5\\\\x=-\frac{6}{5}\\\\x=-1\frac{1}{5}\\\\\\h)\\\\(2x+3)(3x-1)+4=(6x-2)(x+1)\\\\6x^2-2x+9x-3+4=6x^2+6x-2x-2\\\\6x^2+7x+1=6x^2+4x-2\\\\6x^2+7x-6x^2-4x=-2-1\\\\3x=-3\ \ /:3\\\\x=-1$

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