Question

3х2 – 8х – 32. 50 БАЛОВ

Answer 1

Ответ:

Объяснение:

$3x^{2} -8x-32$

D=8^8-4*3*32

D=64+384=448

$\sqrt{448} =8\sqrt{7}$

x1=$\frac{8+8\sqrt{7} }{6} =\frac{2*4+2*(4\sqrt{7}) }{6} =\frac{2*(4+4\sqrt{7}) }{6} =\frac{4+4\sqrt{7} }{3}$

x2=$\frac{8-8\sqrt{7} }{6} =\frac{2*4-2*(4\sqrt{7}) }{6} =\frac{2*(4-4\sqrt{7}) }{6} =\frac{4-4\sqrt{7} }{3}$