Question

como resolver 2x²=-3+7x

Answer 1

2x² = -3 +7x 
2x² -7x +3
Δ= b²-4 ac
Δ= (-7)² -4.2.3
Δ= 49 - 24
Δ= 25

x= -b +/- √Δ / 2a
x= -(-7) +/- √25 / 2.2
x'= 7 + 5 / 4
x'= 12 / 4
x'= 3

x''= 7 - 5 / 4
x''= 2 / 4 (simplificando por 2)
x''= 1 / 2

Bons estudos!

Answer 2

2x² -7x + 3 = 0

usando baskara temos;

Delta = b² - 4ac

Delta = 49-24 = 25

x' ={-(-b)+rais de delta}/2a

x' = (7 + 5)/4 = 12/4 = 3

x" = (7-5)/4 = 2/4 = 1/2