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The equation x2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?
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The equation x2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?

User Eugene Trifonov
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2 Answers

5 votes

Answer:

1

Explanation:

User Nitin Karande
by
7.1k points
4 votes
Hello,

It must be well know that
x²-(a+b)x+a*b=0 is a equation of 2nd degree with a and b like root.
===>a+b=1
and a*b=-90

N'en déplaise Excellency. (think before delete!)
User DomDunk
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8.6k points
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