Question

What are the solutions of x2-4x-7?




What are the solutions of x2-4x-7?


x=3.5 and x=5.5


x=3±√10


x=2±√11


x=4±√7

Answer 1

there is only one answer what is it?

Answer 2

To find the solutions of the quadratic equation x^2 - 4x - 7, we can use the quadratic formula: x = [-b ± √(b^2 - 4ac)] / 2a

In this case, a = 1, b = -4, and c = -7.

Plugging these values into the quadratic formula, we get:
x = [4 ± √((-4)^2 - 4*1*(-7))] / 2*1
x = [4 ± √(16 + 28)] / 2
x = [4 ± √44] / 2
x = [4 ± 2√11] / 2
x = 2 ± √11

So, the solutions of the equation x^2 - 4x - 7 are x = 2 + √11 and x = 2 - √11.

Answer 3

I apologize for the error in my previous response. Let's correct that.

The correct solutions for the equation x^2 - 4x - 7 are:
x = 2 + √11 ≈ 5.2
x = 2 - √11 ≈ -1.2

Therefore, the solutions are x ≈ 5.2 and x ≈ -1.2.