(8√3 - √16*3) *√3 = (8√3 - 4√3) * √3 = 4√3 * √3 = 4 * 3 = 12
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(12 - √7) (12 - √7) = 144 - 2*12√7 + 7 = 144 - 24√7 + 7 = 151 - 24√7
смотри .......................................
Вот так. Удачи<em /><em>тебе</em><em />.........
X²-9x-10
D=81+40=121, √D=√121=11
x1=(9+11)/2=20/2=10
x2=(9-11)/2=-2/2=-1
x²-9x-10=(x-10)(x+1)
X^2 - 8x + 16 - 6 = x^2 - 8x + 10