blevinemu blevinemu
  • 15-07-2020
  • Mathematics
contestada

The equation x2 – 1x – 90 = 0 has solutions {a, b}. What is a + b? –19 –9 1 10

Respuesta :

rupsgos
rupsgos rupsgos
  • 15-07-2020

Answer:

x^2-x-90=0     x^2-10x+9x-90    x(x-10)+9(x-10)

(x+9)(x-10)=0

Solutions are 0-9=-9 and 0+10=10.

10-9=1= a+b

Step-by-step explanation:

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WBennett0502
WBennett0502 WBennett0502
  • 21-10-2020

Answer:

a + b = 1

I hope this helps!

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