Answer:
Step-by-step explanation:
x(x+1)=√20
x²+x=4.472
x²+x- 4.472=0
Solve quadratically and get ur answers
Answer:
x = ±2[tex]\sqrt{5}[/tex] - 1
Step-by-step explanation:
[tex](x+1)^2=20[/tex]
Take the square root of both sides to cancel the square:
x + 1 = ±[tex]\sqrt{20}[/tex]
Simplify the radical:
x + 1 = ±2[tex]\sqrt{5}[/tex]
Subtract 1 from both sides:
x = ±2[tex]\sqrt{5}[/tex] - 1
