1) x^2-4x-12=0 D = ??? 2) x^2+12x+35=0 D = ... 3) x^2+11x+18=0 D=... 4) 2x^2-7x-30=0 D =...

Question

1) x^2-4x-12=0
D = ???
2) x^2+12x+35=0
D = ...
3) x^2+11x+18=0
D=...
4) 2x^2-7x-30=0
D = ...

Answer 1

Остальные решай аналогично за схемой D=b^2-4ac

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