solve. x^2 + 6x + 13 = 0

1 answer

X^2 + 6X + 13 = 0.
Complete the square:
X^2 + 6X + (6/2)^2 = -13,
X^2 + 6X + 9 = -13 + 9 = -4,
(X + 3)^2 = -4,
Take sqrt of both sides:
X + 3 = +- 2i,

X = -3 + 2i, and X = - 3 - 2i.
Similar Questions
    1. answers icon 1 answer
  1. Combine like terms:-3x^2+2x-4x^2-9+6x-2x^2+8 Solve for x: 8x-11= -11x+18 Solve for x: -2(x-5)+7=z-8-5x Solve for x: (x-2)/5 -
    1. answers icon 8 answers
  2. Solve the indicated variable:1. Volume of a cone: solve for h: V=¨ir^2h/3 2. Temperature formula: solve for C: F=9/5C+32
    1. answers icon 1 answer
  3. Put in the correct orderSolve exponentiation. Solve multiplication and division. Solve operations within parentheses Solve
    1. answers icon 1 answer
more similar questions