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29 September, 05:13

Square root (3x+4) = x

solve for x

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Answers (1)
  1. 29 September, 05:37
    0
    To start:

    1 - You would have to get rid of the square root on the left side of the equation by squaring both sides leaving you with 3x + 4 = x^2

    2 - You then set the equation equal to 0 by moving 3x + 4 to the same side as x^2. Leaving you with x^2 - 3x - 4.

    3 - Finally, you solve the equation by finding the factors of the equation, in this case there are two as the highest exponent is 2:

    (x - 4) * (x + 1) - These work as if you were to multiply them together again, you get the second equation as seen in step 2.

    4 - Final Answer:

    x = 4, - 1

    NOTE: We know these numbers are correct as when we plug them back into the equation, they produce the right numbers
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