Question

Valor de X
e)x²-7x+10=0

Answer 1

a = 1  b = -7  c = 10

delta = b2 - 4ac

delta = ( - 7 )2 - 4.1.10

delta = 49 - 40

delta = 9

x = - b + - V delta / 2.a

x = - ( - 7 ) + - V 9 / 2.1

x = + 7 + - 3 / 2

x1 = + 7 - 3 / 2

x1 = 4 / 2

x1 = 2

x2 = + 7 + 3 / 2

x2 = + 10 / 2

x2 = 5

S = { 2,5 }