sienna-wilson_609d62608240c
sienna-wilson_609d62608240c
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molezaa x2=a -7x=b +10=c entao.. delta ( q é o triangulozinho..rs) = b2 - 4a.c (-7)2 - 4. 1. 10 = 49 - 40 = 9 agora pra achar o valor de "x" x = -b +/- raiz de delta/ 2a x= - (-7) +/- 3/ 2.1 x= 7 +/- 3/2 x' = 7+…