4 years ago

Solve for x in the equation x^2-8x+41=0

2 answers:

4 0

Use quadratic formula

(-b +- (sqrt(b^2-4ac) ) / 2a

a=1
b=-8
c=41

1.

(8 + sqrt(64-4*1*41) ) / 2*1
4 + sqrt(-100) / 2
4 + 5i.......................... solution 1

2.

(8 - sqrt(64-4*1*41) ) / 2*1
4 - sqrt(-100) / 2
4 - 5i.......................... solution 2

Juliette [100K]4 years ago

4 0

X = [-(-8) +/- sqrt((-8)^2 -4*41)] / 2

x = ( 8 + sqrt (-100) / 2 and (8 - sqrt(-100) / 2

4 +or- 5i

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