factorise:x^2-6x-135
plz hlp me
Answers
Answered by
27
Step-by-step explanation:
x^2-6x-135
x^2-(15x-9x) -135
x^2-15x+9x-135
x(x-15)+9(x-15)
(x+9)(x-15)
x=-9
or x=15
Answered by
5
Answer:
x=9,x=-15
or
x=-9,x=15
Step-by-step explanation:
By splitting middle terms
x^2- 6x- 135
Product=- 135
Sum. =-6
x^2-9x+15x-135
x(x-9)+15(x-9)
(x-9)(x+15)
x-9=0
x=9
x+15=0
x=-15
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