Ile to jest?? (2x + 5)² - 16 = 25 - (x - 4)² proszę na teraz :) dam naj
2x^2+20x+25 -16 = 25-(x^2-8x+16)
2x^2+20x+25-16 = 25-x^2+8x-16
3x^2+12x = 0
delta = 144-0 = 144
pierwiastek z delty = 12
x1 = (-12-12)/6 = -24/6 = -4
x2 = (-12+12)/6 = 0/6 = 0
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2x^2+20x+25 -16 = 25-(x^2-8x+16)
2x^2+20x+25-16 = 25-x^2+8x-16
3x^2+12x = 0
delta = 144-0 = 144
pierwiastek z delty = 12
x1 = (-12-12)/6 = -24/6 = -4
x2 = (-12+12)/6 = 0/6 = 0