Question

Solve this……
x²×4x-1​

Answer 1

3x^3 is the answer.thank you

Answer 2

x^2+4x-1

Here,

a=1

b=4

c=-1

So,

b^2-4ac

=4^2-4. 1. (-1)

=16+4

=20

Therefore,

x = -b ± √b2 - 4ac/2a

=-4±√20/2.1

=-4±2√5/2

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