Question

factorise x^2-8x+15 by using factor theorem​

Answer 1

Answer:

Step-by-step explanation:

factorise x^2-8x+15 by using factor theorem​

 

=x^2-5x-3x+15=0

x(x-5) -3(x-5)=0

(x-3)(x-5)=0

x=3,5

f(3)=9-24+15=0

f(5)=25-40+15=0

Answer 2

Answer:

Step-by-step explanation:

x^2-8x+15

then x^2-8x+15

x^2-3x-5x+15

x(x-3)-5(x-3)

(x-3)(x-5)

x=3,5

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