Question

solve the equation x²+4x-7=0​

Answer 1

Answer: x²+4x-7=0

=>x²+(2×x×2)+2²-2²-7=0 (Completing the square)

=>(x+2)²=7+4=11

=>x+2=+/-(11)^1/2

=>x=-2+/-(11)^1/2

=>x= -{2+(11)^1/2} or x= (11)^1/2-2

I hope my ans helps

Step-by-step explanation:

Answer 2

Step-by-step explanation:

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