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nikitadnepr [17]
3 years ago
9

PLEASE HELPwhat is the solution tox^2+3x+25=0 show all steps please

Mathematics
1 answer:
asambeis [7]3 years ago
4 0

X^2 + 3x + 25 = 0

Since the quadratic equation is not factorable

Then use the quadratic formula to solve it

X = [- b + sqrt(b^2 – 4ac)] / 2a

and

X = [- b - sqrt(b^2 – 4ac) ]/ 2a

X = [- 3 + sqrt(3^2 – 4(1)(25))] / 2(1)

X = [- 3 + sqrt( - 91 ) ]/ 2

X = -3/2 + sqrt( 91)i/2

So the other solution

X =  -3/2 - sqrt( 91)i/2

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Whats the lcd of 1/7,14/17,12/13,5/6
gizmo_the_mogwai [7]
LCD (1/7, 14/7, 12/13, 5/6)

LCM = (7, 7, 13, 6)

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=  546



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Calculation:

1/7 + 14/7 

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The common denominator you can calculate as the least common multiple of the both denominators:   LCM (7, 7) = 7


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=  279/91


The common denominator you can calculate as the least common multiple of the both denominators:  LCM (7, 13) = 91



Add:

279/91 + 5/6

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= 2129/546



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Hence, 546 is the LCM/LCD of (1/7, 14/17, 13/13, 5/6).






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