Question

SENDO X=-B-+ B2-4.A.C 2.A

Calcule o valor de a=3,b=-7 e c=2.

Answer 1

X = (-b) - (+b2) - 4 . a . c2.a
a= 3    b= -7    c= 2

X = -(-7) - (- 7.2) - 4 . 3 . 2.2 . 3
X = 7 + 14 - 4 . 4 . 3
X = 21 - 48
X = - 27