Question

qual a resposta desta operaçao.(4x+7).(x+6)

Answer 1

(4x + 7) . ( x + 6 )

temos então:

4x² + 24x + 7x + 42
4x² + 31x + 42

Delta = b² -4 ac
Delta = (31)² - 4 . 4 . 42
Delta = 961 - 672
delta = 289
Raiz de Delta = 17

X = -B +- Raiz de Delta/ 2a

X' = (-31 + 17)/8 = -7/4

X'' = (-31 - 17)/8 = -6



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