teannacerza03 teannacerza03
  • 21-06-2019
  • Mathematics
contestada

factor and solve to find roots
x squared -x - 90 =0

Respuesta :

konrad509
konrad509 konrad509
  • 21-06-2019

[tex]x^2-x-90=0\\x^2+9x-10x-90=0\\x(x+9)-10(x+9)=0\\(x-10)(x+9)=0\\x=10 \vee x=-9[/tex]

Answer Link

Otras preguntas

Calculate the discriminant.x2 + 2x – 2 = 0
the number of electrons in the outer ring of the elements phosphorus, potassium, oxygen, iodine, gold, bromine, sulfur, and cobalt?
Why did the USA and the USSR fall out after World War 2?
why were roads significant to the roman republic and ancient cultures and religions of the same time period
benito read 14 books in 3 months, which was 35% of the number of books he had signed up to read during the school year .how many books did Benito sign up to rea
Can you help me with the first two questions?
In humans, having freckles is the result of a dominant gene, and not having freckles is a recessive trait. If a freckled man who is homozygous for this trait ha
Which is a rational number?   A.9
what words from the middle ages start with the letter y
Within a period, an increase in atomic number is usually accompanied by A. a decrease in atomic radius and an increase in electronegativity. B. an increase in a