Question

Find whether x-7 is a factor of
-28-3x+xsquare

Answer 1

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ANSWER :

∴ X-7=0.......[given]

∴ x=7

  put x = 7 in given eqaution

∴ x²+3x-28=0

∴ [7]²+3 x [7] - 28 = 0

∴ 49+21-28 = 0

∴     42 ≠ 0

∴ Hence x-7 is not factor of given eqaution .

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#BEST 0F   lUCK.......................................................

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Answer 2

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HERE'S THE ANSWER ✌
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GIVEN:x-7

put x=7 in equation

x^2-3x-28=0
(7)^2-3*7-28=0
49-21-28=0
49-49=0
0=0

so,
x-7 is a factor if given equation...

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