find the value of a if x+a is a factor of the polynomial 2x2+29x
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Hi friend
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Your answer
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Let f(x) = 2x² + 29x
x + a = 0
=> x = -a
(x + a) is a factor of f(x) ,
so,
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f(-a) = 2x² + 29x = 0
=> 2 × (-a)² + 29 × (-a)= 0
=> 2a² - 29a = 0
=> 2a² = 29a
=> 2a = 29
=> a = 29/2
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---------------
Your answer
----------------------
Let f(x) = 2x² + 29x
x + a = 0
=> x = -a
(x + a) is a factor of f(x) ,
so,
-----
f(-a) = 2x² + 29x = 0
=> 2 × (-a)² + 29 × (-a)= 0
=> 2a² - 29a = 0
=> 2a² = 29a
=> 2a = 29
=> a = 29/2
HOPE IT HELPS
#ARCHITECTSETHROLLINS
✯ BRAINLY STAR ✯
x= -a put in f (x)
no worg hai
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