factories x2+2x-342=0
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#2% valle
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Answer:
16.52
Step-by-step explanation:
using the formula method which is -b +or - √b²-4ac/2a
a=1, b=2, c=-342
-2 +or- √2²-4*1*-342/2*1
-2 +or- √4+1368 /2
-2 +or- √1372 /2
-2 +or- 14√7 /2
-2 +or- 7√7
-2 +-7√7 or -2 - -7√7
-2-7√7 or 2+7√7
= -20.52 or 16.52
so your answer is always the positive number which is 2+7√7 in surd form or 16.52 in decimal.
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