Question

x^2 -x -4 =0
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Answer 1

Answer:

The answer will be found by using the discriminant method.

x=[ -b±(√b²- 4ac)]/ 2a

Here, a is 1, b is -1 and c is -4

So by putting the values in the formula..

[1±√1- 4 (1)(-4)]/2

x = [1± √1 + 16]/2

So the value of x is (1+√17)/2 or (1- √17)/2

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Step-by-step explanation: