rozwiąż rónania
a) (2x-4) * (2x+4)=(2x - 4)²
b) (3x-1)²=(3x-1) * (3x+1)
c) (-3x+6)²=(3x-6) * (3x+6)
d) (8-x) * (8-x)=(2-x)²- 2x²
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a) 4x²-16=4x²-16x+16
4x²-4x²+16x=16+16
16x=32
x=2
b) 9x²-6x+1=9x²-1
9x²-9x²-6x=-1-1
-6x=-2
x=1/3
c) 9x²-36x+36=9x²-36
9x²-9x²-36x=-36-36
-36x=-72
x=2
d) (8-x)(8+x)=(2-x)²-2x² ---> chyba tak powinno być
64-x²=4-4x+x²-2x²
-x²-x²+2x²+4x=4-64
4x=-60
x=15
a.(2x-4)(2x+4)=(2x-4)²
4x²-16=4x²-16x+16
16x=32
x=2
b. (3x-1)²=(3x-1) * (3x+1)
9x² - 6x + 1 = 9x² - 1
- 6x = - 2/ -6
x = 1/3
c.(-3x+6)²=(3x-6) * (3x+6)
9x² - 18x + 36 = 9x²- 36
- 18x = -72 / -18
x = 4
d. (8-x) * (8-x)=(2-x)²- 2x²
64 + x² = 4 - 4x + x² - 2x²
4x +2x² = -64 + 4
4x + 2x² = - 60
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