bamboola1 bamboola1
  • 27-05-2020
  • Mathematics
contestada

20 points
(a) Expand and simplify (9x - 2)(x + 2)
(b) Factorise fully 18a² + 45a
(c) Factorise y² - 10y + 24

Respuesta :

osikbro
osikbro osikbro
  • 27-05-2020

Answer:

(a) [tex]9x^2+16x-4[/tex]

(b) [tex]9a(2a+5)[/tex]

(c) [tex](y-6)(y-4)[/tex]

Step-by-step explanation:

(a)

[tex](9x-2)(x+2)=[/tex]

[tex]9x^2-2x+18x-4=[/tex]

[tex]9x^2+16x-4[/tex]

(b)

[tex]18a^2+45a=[/tex]

[tex]9a(2a+5)[/tex]

(c)

[tex]y^2-10y+24=[/tex]

[tex](y-6)(y-4)[/tex]

Hope this helps!

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