4 years ago

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

2 answers:

8 0

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!)

hram777 [196]4 years ago

5 0

Answer:

Step-by-step explanation:

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