B2 - 4ac если а=1, б=-8, с=7

Question

B2 - 4ac если а=1, б=-8, с=7

Answer 1

8*8-4*1*7=36
x1=8-36/2=-14
x2=8+36/2=22

Answer 2

-8*2-4*(1*7)=-16-28=-44

Comments

-8(2)-4(1+7)