The equation x2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?
–19
–9
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Hey......!!! here is ur answer..........☺️☺️☺️
Given that,
the equation is x²–x–9 = 0..........(1)
On factoring
x²–x–90 = 0
=>x²–10x+9x–90 = 0
=>x(x–10)+9(x–10) = 0
=>(x+9)(x–10) = 0
Then required solution of x = –9 and 10
thus a = –9 and b = 10
Now, a+b = –9+10
=>a+b = 0 <<<<ANS.
I HOPE IT WILL HELP YOU...........✌️✌️✌️
Given that,
the equation is x²–x–9 = 0..........(1)
On factoring
x²–x–90 = 0
=>x²–10x+9x–90 = 0
=>x(x–10)+9(x–10) = 0
=>(x+9)(x–10) = 0
Then required solution of x = –9 and 10
thus a = –9 and b = 10
Now, a+b = –9+10
=>a+b = 0 <<<<ANS.
I HOPE IT WILL HELP YOU...........✌️✌️✌️
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