rozwiąż równania :
4*(6-3x)=20+2x
(x+7)do potegi drugiej = (x-7) (x+7)-3
3x do potegi drugiej - 2(x-1)(x+1)=(x+3)do potegi drugiej
(5-2x)do potegi drugiej +10 = 4 (x+1) (x-1)
prosze o wszystkie obliczenia ! :D
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24-12x=20+2x
14x=-4 / ;14
x=-2/7
x²+14x+49=x²-49-3
14x=-3 / ;14
x= -3/14
25-20x+4x²+10=4x²-4
-20x=-39 / ; (-20)
x= 39/20
4*(6-3x)=20+2x
24-12x=20+2x
-12x-2x=20-24
-14x=-4/:(-14)
x=4/14
x2/7
(x+7)² = (x-7) (x+7)-3
x²+14x+49=x²-49-3
14x=-52-49
14x=-101/:14
x=-101/14
3x² - 2(x-1)(x+1)=(x+3)²
3x²-2(x²-1)=x²+6x+9
3x²-2x²+2=x²+6x+9
-6x=7/:(-6)
x=-1 1/6
(5-2x)² +10 = 4 (x+1) (x-1)
25-20x+4x²+10=4(x²-1)
25-20x+4x²+10=4x²-4
-20x=-4-35
-20x=-39/:(-20)
x=39/20