Question

3х2 – 8х – 32. 50 БАЛОВ

Answer 1

Ответ:

Объяснение:

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

D=8^8-4*3*32

D=64+384=448

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

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

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