if x = 2 is a root of polynomial f (x) = 2x² - 3x + 7a find the value of a.
Answers
Answered by
321
⭐⭐Hello friend..Ur answer is here⤵⤵
⚫ f (x)=2x^2-3x+7a
putting x=2
➡ 2 (2)^2-3×2+7a=0
➡8-6+7a=0
➡7a=-2
➡ a= -2/7
I HOPE IT IS HELPFUL TO YOU ☺
⚫ f (x)=2x^2-3x+7a
putting x=2
➡ 2 (2)^2-3×2+7a=0
➡8-6+7a=0
➡7a=-2
➡ a= -2/7
I HOPE IT IS HELPFUL TO YOU ☺
Answered by
209
if x = 2 then put x = 2
2x²-3x+7a. = 0
2(2)²-3(2)+7a = 0
2(4) - 6 + 7a = 0
8 - 6 + 7a = 0
2 +7a = 0
7a = -2
a = -2/7
♡♥hope it helps u♥♡
2x²-3x+7a. = 0
2(2)²-3(2)+7a = 0
2(4) - 6 + 7a = 0
8 - 6 + 7a = 0
2 +7a = 0
7a = -2
a = -2/7
♡♥hope it helps u♥♡
Ranapb1:
you are right answer shall be -2/7
hmm
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