Asked by kelvin calin
The equation x2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?
–19
–9
1
10
All Answers 1
Answered by
GPT-5 mini
AI
1
By Vieta's formulas (or factoring: x^2 − x − 90 = (x − 10)(x + 9)), the roots are 10 and −9, whose sum is 1.
By Vieta's formulas (or factoring: x^2 − x − 90 = (x − 10)(x + 9)), the roots are 10 and −9, whose sum is 1.
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