factorise the following
x²+2x-1
please answer it fast
Answers
Answered by
1
Answer:
x=(-1±√2)
Step-by-step explanation:
x²+2x-1
by applying quadratic formula
x=[-b±√(b²-4ac)]/2a
x=[-2±√(4-4×1×-1)]/2
x=[-2±√(4+4)]/2
x=(-2±√8)/2
x=(-2±2√2)/2
x=2(-1±√2)/2
x=(-1±√2)
x=(-1+√2)
or
x=(-1-√2)
Similar questions
Social Sciences,
5 months ago
Environmental Sciences,
11 months ago
English,
11 months ago
Math,
1 year ago
Math,
1 year ago