Question

show that √3-1 is the solution of x^2+2x-2=0​

Answer 1

Answer:

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Answer 2

hey mate :

show that √3-1 is the solution of x^2+2x-2=0

Answer:-

given equation

x²+2x-2=0. ...(1)

using this formula

x= [-b±√(b²-4ac)]/2a

here

b=2,a=1,c=-2

so,

x = [-2 ±√{2²-4×1×(-2)}]/2

=[-2±√{4+8}]/2

=[ -2 ± √12]/2

= [ -2 ±2√3]/2

take + ve sing

x= [-2+2√3]/2

= 2(-1+√3)/2

=√3-1

that's proved

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