pls find a and be brainlist
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put x= minus a in the expression
get a=2 the answer
get a=2 the answer
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Given f(x) = 2x^2 + 2ax + 5x + 10.
Given that x + a is a factor of f(x).
By factor theorem, f(-a) = 0.
f(-a) = 2(-a)^2 + 2a(-a) + 5(-a) + 10 = 0
= 2a^2 - 2a^2 - 5a + 10 = 0
= -5a + 10 = 0
= -5a = -10
a = 2.
Therefore the value of a = 2.
Hope this helps!
Given that x + a is a factor of f(x).
By factor theorem, f(-a) = 0.
f(-a) = 2(-a)^2 + 2a(-a) + 5(-a) + 10 = 0
= 2a^2 - 2a^2 - 5a + 10 = 0
= -5a + 10 = 0
= -5a = -10
a = 2.
Therefore the value of a = 2.
Hope this helps!
siddhartharao77:
:-)
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