Which equation has the solutions x=1+or-square root of 5?
a)x2 + 2x + 4 = 0
b)x2 – 2x + 4 = 0
c)x2 + 2x – 4 = 0
d)x2 – 2x – 4 = 0

We will proceed to solve each case to determine the solution of the problem.

case a)

Group terms that contain the same variable, and move the constant to the opposite side of the equation

Complete the square. Remember to balance the equation by adding the same constants to each side.

Rewrite as perfect squares

therefore

case a) is not the solution of the problem

case b)

Group terms that contain the same variable, and move the constant to the opposite side of the equation

Complete the square. Remember to balance the equation by adding the same constants to each side.

Rewrite as perfect squares

therefore

case b) is not the solution of the problem

case c)

Group terms that contain the same variable, and move the constant to the opposite side of the equation

Complete the square. Remember to balance the equation by adding the same constants to each side.

Rewrite as perfect squares

therefore

case c) is not the solution of the problem

case d)

Group terms that contain the same variable, and move the constant to the opposite side of the equation

Complete the square. Remember to balance the equation by adding the same constants to each side.

Rewrite as perfect squares

therefore

case d) is the solution of the problem

therefore

the answer is

62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

( give brainliest)

x = 17

step-by-step explanation:

1st step: isolate x.

24 - 3x = -27

-24         -24

-3x   =   -51

2nd step: divide.

-3x     =   -51

  3             3

  x       =     17

hope this