Question

solve the following quadratic equations by
factorisation,
x² - 15x+54=0​

Answer 1

Answer:

x²-9x-6x+54=0,

x²-9x-6x+54=0,x(x-9)-6(x-9)=0,

x²-9x-6x+54=0,x(x-9)-6(x-9)=0,x = 6 or x = 9.

Answer 2

Answer:

X² – 15x + 54 = 0

⇒ x² - 9x - 6x + 54 = 0

⇒ x (x - 9) - 6 (x - 9) = 0

⇒ (x - 6) (x - 9) = 0

⇒ (x - 6) = 0 or (x - 9) = 0

⇒ x = 6 or x = 9

So, 6 and 9 are the roots of the given quadratic equation.