x^2-2x-15=0 then x=?
Answers
Answered by
2
Answer:
x=5,-3
Step-by-step explanation:
x^2-2x-15=0
x^2+3x-5x-15=0
x(x+3)-5(x+3)=0
(x-5)(x+3)=0
x=5,-3
Answered by
35
Your Answer :-
x²-2x-15 = 0
factorise using middle term splitting method :-
x²- 2x - 15 = 0
=> x²+3x -5x - 15 = 0
=> x(x + 3) - 5(x + 3) = 0
=> (x + 3)(x - 5) = 0
=> x + 3 = 0. or. x - 5 = 0
=> x = -3. or. x = 5
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