x whole square-2x-99
Answers
Answered by
11
Probably we need to factorize the given polynomial.
x ^ 2 - 2x - 99
Splitting the middle term,
= > x ^ 2 + 9x - 11x - 99
Taking out common factors,
= > x ( x + 9 ) - 11 ( x + 9 )
Again taking out common factors,
= > ( x + 9 ) ( x - 11 )
Therefore,
The required answer is ( x + 9 ) ( x - 11 ) .
x ^ 2 - 2x - 99
Splitting the middle term,
= > x ^ 2 + 9x - 11x - 99
Taking out common factors,
= > x ( x + 9 ) - 11 ( x + 9 )
Again taking out common factors,
= > ( x + 9 ) ( x - 11 )
Therefore,
The required answer is ( x + 9 ) ( x - 11 ) .
Answered by
5
x² - 2x - 99
USING QUADRATIC FORMULA U CAN FIND ROOTS EASILY I.E
X = -b + √ b² - 4 ac/2
=> X= -(-2) {+}√2² - 4(99)(-1)/2...........(1)
=> 2 + √4 +396 /2
=> 2 +√400/2
=>2+20/2
=>22/2
=>11
SIMPLY TO FIND NEXT ROOT REOLACE THE {+} ...in (1)by - sign and solve to get the next root
USING QUADRATIC FORMULA U CAN FIND ROOTS EASILY I.E
X = -b + √ b² - 4 ac/2
=> X= -(-2) {+}√2² - 4(99)(-1)/2...........(1)
=> 2 + √4 +396 /2
=> 2 +√400/2
=>2+20/2
=>22/2
=>11
SIMPLY TO FIND NEXT ROOT REOLACE THE {+} ...in (1)by - sign and solve to get the next root
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