4x+1=2x-3
Subtarct 2x from each side:
2x+1=-3
Subtract one from each side:
2x=-4
Divide by 2 on each side:
x=-2
Plug the answer back into the equation:
4∙-2+1=2∙-2-3
-8+1=-4-3
-7=-7
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Answer this question…A. x4 + 2x3 + 9x2 + 4 B. x4 + 4x3 + 9x2 + 4 C. x4 + 2x3 + 9x2 + 4x + 4 D. x4 + 2x3 + 9x2 - 4x + 4
The answer to the problem of 13 equals -4x plus 9 is x equals -1.
(x4 - 2x3 + 2x2 + x + 4) / (x2 + x + 1)You can work this out using long division:x2 - 3x + 4___________________________x2 + x + 1 ) x4 - 2x3 + 2x2 + x + 4x4 + x3 + x2-3x3 + x2 + x-3x3 - 3x2 - 3x4x2 + 4x + 44x2 + 4x + 40R∴ x4 - 2x3 + 2x2 + x + 4 = (x2 + x + 1)(x2 - 3x + 4)
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